Q: Can you solve question 16 in the picture shown?
A: Oxidation number also called oxidation state, the total number of electrons that an atom either gain...
Q: |Alkyl bromide C 1. diethyl malonate NaOEt, EtOH 2. NaOH, H,O 3. H3O*, heat OH Incorrect
A: We have to give the structure of alkyl halide
Q: provide the following information including the lewis structure and the 3D sketch for CH2Cl2 and SCl...
A: Valence electron domains means the total no of bond pairs and lone pairs associated with the central...
Q: To be more specific, this particular problem deals with substitution at the alpha carbon for carbony...
A:
Q: 18 please
A: Answer 18) Given weight of child = 40 lb Conversion factor: 40 lb1×1 Kg2.205 lb = 18.14 Kg Daily d...
Q: magnesium hydroxide has Ksp = 5.61 × 10-¹². a) What will be the pH when we add 1 mol of MgCl2 to a l...
A: Ksp represent solubility product and it gives an idea about the product of ion during saturated solu...
Q: Fe2+ (aq) + Zn(s) Fe(s) + Zn²+(09) E +0.32 V A galvanic cell generates a cell potential of +0.32 V w...
A: Answer- Cell potential- The cell potential, Ecell, is the measure of the potential difference betwee...
Q: Chemistry Question
A:
Q: Draw the products for the following reaction conditions using the starting material provided.
A:
Q: Suppose you are titrating a solution of sodium oxalate, which has a molar mass of 134 g/mol, with a ...
A: Number of moles of potassium permanganate should be equal to sodium oxalate at the equivalence poin...
Q: Write down the open reactions and products that occur with these reagents. | Compounds solubility, i...
A:
Q: Can i get help with c,d and e
A: We will write the organic products
Q: 1) With what observations can we understand that a reaction has taken place? 2) How is BaSO4 prepare...
A: (1) By help of Following observations we can understand that a reaction has taken place : (A) Evolut...
Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reacti...
A: Total 2 moles of compound can react with water, so number of moles of water will also be 2. Thus, m...
Q: Gallium is produced by the electrolysis of a solution made by dissolving gallium oxide in concentrat...
A: Given information, Current = 0.490 A Time = 50.0 min = 3000 s
Q: The pKb of 4-hydroxypyridine is 10.80 at 25°C. What is the pH of a 0.0250 M solution?
A: We will use concept of weak base
Q: Discuss Le Chatelier's Principle in detail. Explain all perturbations on the system, factors and pos...
A:
Q: Under what conditions are gases most likely to behave ideally? A) High pressures B) Low temperatures...
A: Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure, as the pot...
Q: TLC technique is classified as: Select one: O a. Qualitative analysis technique O b. Complicated ana...
A: Chromatography is the method of separation of different components present in a compound.
Q: using the picture below as reference: do the following: a.) label if any of the structures (A-D) are...
A: a) (1) - a keto-pentose: Compound C A monosaccharide compound having both ketone i.e. ketose an...
Q: As a professional nerd I preferred to heat my coffee using burnsen burner. Bunsen burners use methan...
A:
Q: What is the percent yield of the reaction if only 23.4 g of iron (Fe) was actually produced? Remembe...
A: Fe2O3 + Al --> Fe + Al2O3 unbalanced equation Balanced equation Fe2O3 + 2Al --> 2Fe ...
Q: Name the following heterocyclic compounds using Fusion method:
A: Rules to name fused hetrocyclic compounds: 1. Start numbering from the atom next to the fusion atom....
Q: Please answer very soon will give rating surely
A:
Q: Which of the following compounds is a tertiary amine?
A: Tertiary amine is a compound in which the Nitrogen group of amine functional group is directly attac...
Q: If the cell is a standard one, write the spontaneous overall reaction and calculate the voltage that...
A: Since standard reduction potential of Ni+2 is more as compared to Cd+2 so Ni electrode act as cathod...
Q: What is the other name of substituents for the naming of hydrocarbons?
A: A substituent is one or a group of atoms that replaces (one or more) hydrogen atoms on the parent ch...
Q: The figure below shows how the pH changes when CH3COOH at a concentration of 0.1 mol / liter is titr...
A: In titration of weak acid(acetic acid) with ammonia (weak base) no indicator indicate the exact neut...
Q: How many moles of oxygen atoms are contained in each compound?
A: Generally, the number of moles is the representation of the concentration of the solute present in t...
Q: Third slide: Title Chemical Indicators. A picture of a chemical indicator. A chart listing atleast 3...
A:
Q: What volume of 0.205 M K3PO4 solution is necessary to completely react with 142 mL of 0.0112 M NiCl2...
A: Molarity = number of moles of solute/volume of solution (in L) so, number of moles = molarity × Vol...
Q: In the formula for sodium phosphate (Na3PO4), how many moles of sodium are represented? How many mol...
A: In the formula for sodium phosphate (Na3PO4) 3 moles of sodium are represented 1 mole of phosphoru...
Q: Calculate the cell potential for the reaction as written at 25.00 °C, given that [Mg2+]=0.790 M and ...
A: Cell potential calculation:
Q: Cd(s) | CdCl, (aq) || CI"(aq) | Cl, (1) | C(s) Write the reduction half-reaction occuring at the C(s...
A: All the above answer is correct So I. Calculating only mass of Cl2
Q: 2.90 x 10^-3g of unknown gas are produced at 298k and 1.00 atm. The volume of gas generated was 3.52...
A:
Q: An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an abs...
A: Interpretation - To determine the molar extinction coefficient when an ethanol solution of 3.5mg/10...
Q: Write down the open reactions and products that occur with these reagents. solubility, in water Bene...
A:
Q: Propyl Bromide 1. Interpretation of the HDI (possible functional groups, alkene, alkyne) 2. Identify...
A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...
Q: Which of the following or behave most like an ideal gas A-helium B-neon C-argon D-krypton
A: Multiple choice answer regarding ideal gases.
Q: Predict the stereochemistry and justify i) CIB(c-Hex)2, EtgN Ph ii) PHCHO
A: The stereochemistry of any chemical compound gives the orientation of the molecules in 3 D space. Th...
Q: Show that K for the sum of the following reactions is equal to Kw. HMnO4(aq)⇌H+(aq)+MnO4−(aq) MnO4−...
A: Given reactions: 1. HMnO4 (aq) ↔H+ (aq) + MnO4- (aq) 2. MnO4- (aq) + H2O (l) ↔HMnO4 (aq) + OH- (aq)....
Q: Draw the major organic product of the following reaction sequence. 1) NaH 2) A 3) H,0
A: Alcohols are weakly acidic in nature and it forms alkoxide ion in the presence of a base. The alkoxi...
Q: molekules word met eIke When hydrated UO2(NO3)2 •XHO is heated gently, the water of hydration is los...
A:
Q: H3C-O-SiH3 ether, which is similar to dimethyleters, was synthesized. This ether is known to be a w...
A: In H3C-O-SiH3, Si is a third-row element it has a lower energetic vacant d orbital which can accept ...
Q: SH 1) NAOH 2) Br
A: Thiol contains an acidic hydrogen atom, this acidic hydrogen atom is removed as a proton in the pres...
Q: The polarity of silica gel (stationary phase) is low. Select one: O True O False
A: In chromatography, we use a stationary phase, and one mobile phase. The stationary phase must be hi...
Q: Calculate the binding energy per nucleon of in kJ/mol. The required masses (in g/mol) are: °B 10.012...
A: Binding energy can be calculated by using the following formula B.E = Mass defect *(c)2
Q: First Slide: Title of Slide should be testing acids and bases. A chart should follow. The first colu...
A: pH is the measure of acidity or basicity. Various method used to determine pH of the substance. 1. ...
Q: Consider the following half-reactions: Half-reaction E° (V) Ag*(aq) + e". » Ag(s) 0.799V Pb2*(aq) + ...
A: Since you have asked a question with multiple sub-parts, we will solve first three sub-parts for y...
Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The half-...
A:
-
The pKa of NH3 is estimated to be 35. Its conjugate base, the amide ion (NH2−), can be isolated as an alkali metal salt, such as sodium amide (NaNH2). Calculate the pH of a solution prepared by adding 0.100 mol of sodium amide to 1.00 L of water. Does the pH differ appreciably from the pH of a NaOH solution of the same concentration? Why or why not?
Step by step
Solved in 4 steps
- For conjugate acidbase pairs, how are Ka and Kb related? Consider the reaction of acetic acid in water CH3CO2H(aq)+H2O(l)CH3CO2(aq)+H3O+(aq) where Ka = 1.8 105 a. Which two bases are competing for the proton? b. Which is the stronger base? c. In light of your answer to part b. why do we classify the acetate ion (CH3CO2) as a weak base? Use an appropriate reaction to justify your answer. In general, as base strength increases, conjugate acid strength decreases. Explain why the conjugate acid of the weak base NH3 is a weak acid. To summarize, the conjugate base of a weak acid is a weak base and the conjugate acid of a weak base is a weak acid (weak gives you weak). Assuming Ka for a monoprotic strong acid is 1 106, calculate Kb for the conjugate base of this strong acid. Why do conjugate bases of strong acids have no basic properties in water? List the conjugate bases of the six common strong acids. To tie it all together, some instructors have students think of Li+, K+, Rb+, Cs+, Ca2+, Sr2+, and Ba2+ as the conjugate acids of the strong bases LiOH, KOH. RbOH, CsOH, Ca(OH)2, Sr(OH)2, and Ba(OH)2. Although not technically correct, the conjugate acid strength of these cations is similar to the conjugate base strength of the strong acids. That is, these cations have no acidic properties in water; similarly, the conjugate bases of strong acids have no basic properties (strong gives you worthless). Fill in the blanks with the correct response. The conjugate base of a weak acid is a_____base. The conjugate acid of a weak base is a_____acid. The conjugate base of a strong acid is a_____base. The conjugate acid of a strong base is a_____ acid. (Hint: Weak gives you weak and strong gives you worthless.)Estimate the pH that results when the following two solutions are mixed. a) 50 mL of 0.3 M CH3COOH and 50 mL of 0.4 M KOH b) 100 mL of 0.3 M CH3COOH and 50 mL of 0.4 M NaOH c) 150 mL of 0.3 M CH3COOH and 100 mL of 0.3 M Ba(OH)2 d) 200 mL of 0.3 M CH3COOH and 100 mL of 0.3 M Ba(OH)2Methylammonium chloride is a salt of methylamine, CH3NH2. A 0.10 M solution of this salt has a pH of 5.82. a Calculate the value for the equilibrium constant for the reaction CH3NH3++H2OCH3NH2+H3O+ b What is the Kb value for methylamine? c What is the pH of a solution in which 0.450 mol of solid methylammonium chloride is added to 1.00 L of a 0.250 M solution of methylamine? Assume no volume change.
- The pH of a 0.10-M solution of propanoic acid, CH3CH2COOH, a weak organic acid, is measured at equilibrium and found to be 2.93 at 25 °C. Calculate the Ka of propanoic acid.The pigment cyanidin aglycone is one of the anthocyanin molecules that gives red cabbage (Brassica oleracea var. capitata f. rubra) its characteristic red coloration. Many chemistry students have used this red cabbage indicator to study acid-base chemistry. Estimate tire pH range at which cyanidin agly-cone shows a color change. Anth-H(aq) Anth(aq) + H+ (aq) Ka = 1.3 107Write an equation for each of the following buffering actions. a. the response of a HPO42/PO43 buffer to the addition of OH ions b. the response of a HF/F buffer to the addition of OH ions c. the response of a HCN/CN buffer to the addition of H3O+ ions d. the response of a H3PO4/H2PO4 buffer to the addition of H3O+ ions
- Acids You make a solution by dissolving 0.0010 mol of HCl in enough water to make 1.0 L of solution. a Write the chemical equation for the reaction of HCl(aq) and water. b Without performing calculations, give a rough estimate of the pH of the HCl solution. Justify your answer. c Calculate the H3O+ concentration and the pH of the solution. d Is there any concentration of the base OH present in this solution of HCl(aq)? If so, where did it come from? e If you increase the OH concentration of the solution by adding NaOH, does the H3O+ concentration change? If you think it does, explain why this change occurs and whether the H3O+ concentration increases or decreases. f If you were to measure the pH of 10 drops of the original HCl solution, would you expect it to be different from the pH of the entire sample? Explain. g Explain how two different volumes of your original HCl solution can have the same pH yet contain different moles of H3O+. h If 1.0 L of pure water were added to the HCl solution, would this have any impact on the pH? Explain.A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.60. What was the concentration of the solution? The Kd of lactic acid is 1.4 104.Malic acid is a weak diprotic organic acid with Ka1 = 4.0 104 and Ka2 = 9.0 105. a Letting the symbol H2A represent malic acid, write the chemical equations that represent Ka1 and Ka2. Write the chemical equation that represents Ka1 Ka2. b Qualitatively describe the relative concentrations of H2A, HA, A2, and H3O+ in a solution that is about one molar in malic acid. c Calculate the pH of a 0.0175 M malic acid solution and the equilibrium concentration of [H2A]. d What is the A2 concentrationin in solutions b and c?
- Both ions in the salt ammonium acetate (NH4C2H3O2) hydrolyze in aqueous solution. Explain why this hydrolysis produces a neutral solution rather than an acidic or basic solution.Tartaric acid is a weak diprotic fruit acid with Ka1 = 1.0 103 and Ka2 = 4.6 105. a Letting the symbol H2A represent tartaric acid, write the chemical equations that represent Ka1 and Ka2. Write the chemical equation that represents Ka1 Ka2. b Qualitatively describe the relative concentrations of H2A, HA, A2, and H3O+ in a solution that is about 0.5 M in tartaric acid. c Calculate the pH of a 0 0250 M tartaric acid solution and the equilibrium concentration of [H2A]. d What is the A2 concentration in solutions b and c?Consider sodium acrylate, NaC3H3O2. Ka for acrylic acid (its conjugate acid) is 5.5 105. (a) Write a balanced net ionic equation for the reaction that makes aqueous solutions of sodium acrylate basic. (b) Calculate Kb for the reaction in (a). (c) Find the pH of a solution prepared by dissolving 1.61 g NaC3H3O2 in enough water to make 835 mL of solution.
