Shown below it the equilibrium between guanidine and the guanidinium ion. NH₂ pKa = 13.60 H₂N-C-NH₂ NH H₂N-C-NH₂ Guanidinium Ion Guanidine The pKa of the guanidinium ion is 13.60. At what pH is guanidine 35% ionized? Type your answer...
Q: hat type of reaction occurs when a quantity of water is added to cyclohexene in e presence of an…
A: Organic reactions are those in which organic reactant react to form organic products. There are…
Q: Which elements are post-transition metals? A. Europium, Gadolinium, Terbium B. Uranium, Neptunium,…
A: Post-transition metals are also termed as the poor metals which are a group of metals on the…
Q: Resonance, hybridization, Lewis structures: Draw the most important resonance contributor of the…
A:
Q: How many grams of chlorine atoms are present in a 7.73 g sample of barium chloride (BaCl2)? Enter…
A:
Q: A solution is made by mixing 40.0 mL of ethanol, C₂H,O, and 60.0 mL of water. Assuming ideal…
A:
Q: Which formula represents an unsaturated hydrocarbon? a. C5H12 b. C6H14 c. C7H16 d. C8H14
A: A SATURATED hydrocarbon is defined by the general formula CnH2n+2 (Alkane) A UNSATURATED…
Q: A semipermeable membrane separates two aqueous solutions at 37 °C. For each of the cases, determine…
A: Through semi-permeable membrane , the flow of solvent is called as osmosis. In this process , the…
Q: OMe CHO + PPh3 NaOH CH₂l2, Zn(Hg) Br 10 mol% PdCl₂(PPH3)2 20 mol% PCy3, DIPEA
A: Kindly repost your remaining questions seperately.
Q: Doing the flame test is important in chemistry because of the following reasons EXCEPT this a. it…
A: Doing the flame test is important in chemistry because of the following reasons EXCEPT this :
Q: H. Calculate AGRxn using the AG values in your references. I. Is the reaction spontaneous at this…
A: G , H ) We can calculate the following values using the formula. I ) The reaction is said to be…
Q: Given the thermochemical equations X₂ + 3 Y₂2 XY3 X₂ +2Z₂ → 2XZ₂ - AH₁ = -390 kJ AH₂ = -160 kJ 2 Y₂…
A:
Q: 2. Calcium Flourite, CaF2, has a structure based on the fec lattice and a basis with Ca at 000 and…
A: Given CaF2 has FCC structure. Ca(000),F(1/4 1/4 1/4),F(3/4 3/4 3/4)
Q: What is the best description of bond length? a. a distance between nuclei that yields the best…
A: Bondlength is the distance between nuclei of two atoms. It is generally in the order of picometer…
Q: Anwita is on a geology feild trip and finds a rock that contains 38% of the original potassium-40,…
A: Half life of potassium-40= 1.25×10^9 Initial amount of potassium -40 = 100 gm Final amount of…
Q: What is the correct assignment of the names of the following heterocycles?
A: Heterocyclic Compounds are ring compounds having atoms of two or more elements in a ring beside…
Q: 3. On the following titration curve label the equivalence point and the pka(s). PH 12.0 10.0 8.0 6.0…
A: Answer: This question is based on acid-base titration where amino acid is being titrated against…
Q: 4b) Canavanine is closely related to arginine, and like arginine its side group has a +1 charge when…
A: Canavanine has a similar structure of Arginine. Hence Canavanine has 3 groups that can be…
Q: apor pressure data are given here for acetic acid, CH3 emperature (°C) Vapor Pressure (mm Hg) 25…
A:
Q: Try to complete the missing information for these three isotopes using only the data provided.…
A:
Q: 1. Consider this compound: GH13 cô CH b) How many signals would this compound give in the 'NMR? You…
A: The proton NMR shows different signals for different types of proton (whose environments are…
Q: Classify the following atoms as having only ground state electrons, where all electrons occupy the…
A: To classify the following atoms as having only ground-state electrons, where all electrons occupy…
Q: Curved arrows are used to illustrate the flow of electrons. Using the provided resonance structures,…
A: The arrows pushing mechanism can be shown as:
Q: A sample of nitrogen gas occupies a volume of 7.76 L at 63.0°C and 379 torr. If the volume of the…
A:
Q: What colors are the fluorescent emissions due to quinine and the Mg-HQSA complex, respectively?
A: Fluorescence emission is the emission of light by a substance which has absorbed light in other part…
Q: Q: A worker’s exposure to solvents was monitored for a full shift. The results are presented in the…
A: TLV-TWA stands for Threshold Limit Value-Time-Weighed Average which is defined as the threshold…
Q: 1)the chemical symbol found on the periodic table is ? 2) the number of protons for the product is…
A: 1.Now we know that the number must be same on both the product as well as the reactant Side and we…
Q: What type(s) of intermolecular forces are expected between NOBr molecules? ball & stick - + labels…
A: we have to determine the intermolecular forces present in NOBr molecule
Q: 85.0-kg person is exposed to 419 rad of radiation. How many joules did this person absorb?
A:
Q: How could spectroscopy be used to support that the below reaction occurred? Choose all that apply.…
A: IR spectroscopy is Infrared spectroscopy. It is used to study and identify chemical compounds/…
Q: Objectives I. Determine the number of subatomic particles of an atom given its mass number and…
A: Here we are required to determine the number of subatomic particle of atom.
Q: The general values for steric and torsional strain are provided. Use these values to calculate the…
A:
Q: What functional group is indicated by the arrow? Percent Transmission (Transmitance) 0.8 0.6 0.4 0.2…
A:
Q: Which of the following compounds would have the highest boiling point? OCH3CH2OH СН3СН3 СН3ОН…
A:
Q: A 0.88g gummy bear is burned in a bomb calorimeter. The temperature started at 21.5 degrees Celcius…
A:
Q: Write the IUPAC name of the following ALKYNES: CHΞCH CH3-CH2-CΞCH CHΞC-CH|CH3|-CH2-CH3 (FIRST…
A: Alkynes contains the carbon- carbon triple bonds. According to IUPAC nomenclature system given…
Q: If you had 1 mol of Mn4(ClO4)3 how many moles of Cl would there be?
A:
Q: 18 A selenium atom has a 2- charge. Which best describes the selenium atom? A. 34 protons, 32…
A: Selenium is an element having atomic number 34. This means in a neutral Se atom, there are 34…
Q: If you make 250 mL of a 20X stock solution on NaCl, how many grams of NaCl would you need in how…
A: Introduction To make a stock solution, weigh out the proper amount of a pure solid or measure out…
Q: 1. What is the density of a solid if a sample occupying a volume of 16.53 mL wei 85.4 g? 2. Why does…
A:
Q: What is the structure of an acetyl functional group? What is the electron domain geometry and…
A: An acetyl group is a moeity which contains two carbon atoms ,three hydrogen atoms and one hydrogen…
Q: II. Calculate the atomic weight of each element given the mass and natural occurrence of each…
A: We have given the masses and isotopic abundance of three isotopes of magnesium. Isotopes of an…
Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…
A: Given - Density of 25.0 mL water = 1.001 g/mL. We have to find the density of 50.0 mL of water.
Q: 1. V₂(SO4)3 -> Vanadium (III) Sulphate V₂(SO4)3->2V+3+3(SO 4)-² 2. Zn 3P 2 -> Tri zinc Di phosphide…
A: In solutions( aqueous ) the salt MaNb dissociates in aMb+ (cation) and bNa- (anion). Similar to this…
Q: Is there any importants to the extra given information such as the molar mass of Ethanol (46.07…
A: To calculate the volume , we need only density formula.
Q: 1. Diels-Alder reactions come in many different types. The following is an intramolecular example,…
A: A Diels-Alder reaction is the reaction between a conjugated dien and an alkene to form a six…
Q: 1. Consider the following food label Serving Size 2tsp (5g) Serving per container about 5 Amount per…
A: To answer questions about the given food label.
Q: Classify/ Name the cycloalkanes below:
A: The naming of organic compounds can be done with the help of rules of international union of pure…
Q: III. Write the name of the following compounds. 1. (NH4)2SO4 2. NaH₂PO4 3. Cr(CH3CO2)3 4. Sn(HPO4)2…
A:
Q: In a saturated aqueous solution of Ag₂SO4, the silver ion concentration is 3.11 x 10-2 M and the…
A:
Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…
A: Intensive properties are those properties whose value do not change with the amount of substance.…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- 20. Which of the following acid/ conjugate base pairs would function best as a buffer at physiological pH? a Lactic acid / Lactate ion; pKa = 3.86 b Carbonic acid / Bicarbonate ion; pKa = 6.37 c Bicarbonate ion / Carbonate ion; pKa = 10.25 d Dihydrogen phosphate / Monohydrogen phosphate ion; pKa = 6.86 e Acetic acid / Acetate ion; pKa = 4.76The dissociation of lactic acid to lactate is shown in the reaction. Lactic acid has a pk, of 3.86. + H* HO OH OH Lactic acid Lactate A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.32. Calculate the ratio of the lactate concentration to the lactic acid concentration in this solution. [lactate] [lactic acid] 0.301 What fraction of the lactic acid/lactate mixture is lactic acid? fraction lactic acid =Consider the following five weak acids: Succinic acid: pKa = 4.16HOBr: Ka = 2.06 x 10-9Dinicotinic: pKa = 2.08Nitrobenzoic: Ka = 6.95 x 10-3Saccharin: pKa = 11.68 Order these acids from the strongest (1) to the weakest (5)
- Which of the following acid/ conjugate base pairs would function best as a buffer at physiological pH? Lactic acid / Lactate ion; pka = 3.86 Carbonic acid / Bicarbonate ion; pka = 6.37 Bicarbonate ion / Carbonate ion; pKa = 10.25 Dihydrogen phosphate / Monohydrogen phosphate ion; pKa = 6.86 Acetic acid / Acetate ion; pka = 4.76A weak acid has a pKa of 7.6. What is the proportion of A- to HA if pH is 9.08? Round to one decimal place. Thank You!4 Which nitrogen is pKa1 and pKa2 and explain why. Draw the salt form at ohysiological pH
- A 0.100M succinic acid solution (diprotic acid: Kal = 6.21E-5, Ka2 = 2.31E-6) at pH 5, calculate the [H₂A], [HA], and [A²-]. A) [H2A] = 0.0999, [HA-] = 6.21E-5, [A2-] = 1.43E-9 B) [H2A] = 0.0116, [HA-] = 0.0718, [A2-] = 0.0166 C) [H2A] = 6.9E-8, [HA-] = 4.31E-4, [A2-] = 0.996 D) [H2A] = 0.0266, [HA-] = 0.0631, [A2-] = 0.0103Shown below is the equilibrium between methylammonia and the methylammonium ion. H H3C-N-H H Methylammonium Ion H H₂C-N: H Methylammonia The pKa of the methylammonium ion is 10.62. At what pH is methylammonia 1/5 ionized? Type your answer...What is the pka of an acid with a Ka=4.5 x 10-6? Give your answer with two digits after the decimal place.
- Calculate the pH of a 0.100 M alanine (HL/intermediate form) solution. pKb1 = 4.29 and pKb2 = 11.67.Given the following information determine which of these acids is the strongest? Ka for boric acid is 7.3 x 10–10 pKa of acetic acid is 4.75 Ka for lactic acid is 8.4 x 10–4 pKa of phenol is 9.89 A acetic acid B formic acid C lactic acid D phenolWhat are the most likely products formed from mixing the following neutral compounds? HINT: The most acidic proton in the acid will be transferred to the most basic site in the base. OH НО A В C D НО О А ABC В о с НО + OH OH NH₂ NH₂ + NH3 NH3 NH₂2