The pH at the first equivalence point of the titration curve of a weak diprotic acid such as phenylalanine whose pka₁ is 3.2 and pka2 is 10.8 is most probably

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Q: THIS QUESTION MUST BE COMPLETED Solid potassium nitrate dissolves in water according to the equation…

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Q: Draw the Lewis Structure of OCl2 Molecular Geometry? Ideal Bond Angles? Are there Polar Bonds…

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Q: 17. What is the pH of a 0.024 M acetic acid (K₁ = 1.8 x 105) solution at 25 °C? A: 3.18

A: Ostwalt diluation law gives then concentration of H+ ions.

Q: Liquid hexane CH3CH24CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2…

A: Given -> Weight of water (Actual yield) = 1.10 gm Weight of hexane = 0.86 gm  Weight of O2 = 5.2…

Q: Question 20 of 26 Submit What is the energy (in J) of a mole of photons that have a wavelength of…

A: Given -> Wavelength= 701nm  h = 6.626 × 10-34 J.s  c = 3.00 × 108 m/s

Q: 3. Using your orbital diagrams, briefly explain why Se²-, Sn4+, and Sn²+ are common ions for Se and…

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Q: In an aqueous solution of a certain acid with pK = 7.99 the pH is 4.67. Calculate the percent of the…

A: Given -> pKa = 7.99  pH = 4.67

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A: We are provided the recipe details for the preparation of hollandaise sauce which is our product.…

Q: Draw the Lewis Structure of XeF4 Molecular Geometry? Ideal Bond Angles? Are there Polar Bonds…

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Q: How many Liters (O2) are consumed, STP, if 59.9grams C2H6 is burned C2H6(g) + O2 -> CO2(g) + H2O(g)…

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Q: 1) What did the Stern-Gerlach experiment demonstrate?

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Q: Various members of a class of compounds called alkenes (Chapter 11) react with hydrogen to produce a…

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Q: A solution is prepared at 25 °C that is initially 0.18M in dimethylamine ((CH3)₂NH), a bromide…

A: Given,  Concentration of dimethylamine = [(CH3)2NH] = 0.18 M Concentration of dimethyl ammonium…

Q: 1. Classify the following if either Aromatic or Not aromatic a. a b. + d. e. ZI H₂

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Q: 1.5 Give two examples of inorganic precipitation agents and elements that can b precipitated using…

A: Precipitation agents are the chemicals that are added to form solid i.e. to cause precipitation.…

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A: In case of molecule to absorb light or to be IR active, It should have a dipole moment, i.e.; it…

Q: A student found that the sulfate ion concentration in a solution of Al2(SO4)3 was 0.44 M. What was…

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Q: About how much more energy is released in a hydrogen bomb compared to a plutonium bomb? Group of…

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Q: Name the alkene

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Q: The preparations of two aqueous solutions are described in the table below. For each solution, write…

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Q: Calculate the mass of scheelite (CaWO4) that contains a million (1.0 × 10°) oxygen atoms. Be sure…

A: 1 mole = 6.022 x 1023 entities. Molar mass is equal to the mass of 1 mole.

Q: The decomposition of N₂O4 at 25 °C, N₂O4(g) → 2NO₂(g) has Kc = 4.61 x 10-³. A 3.55 L vessel…

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Q: on 2 of 18 O Macmillan Learning Balance the combustion reaction in order to answer the question. Use…

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Q: Imagine you want to heat 75.0 grams of water from 60°C to 69°C. You have a device (like a stove)…

A: Answer: This question is based on heat exchange, where heat supplied by stove to water should be…

Q: 2. A water sample has 10 µg/L Hg2+ and a density of 1.0 g/mL (atomic weight of Hg = 200.59).…

A: a) 1μg/L = 1ppb    so, 10μg/L = 10ppb b) Molecular weight = 200.59 A molecular weight of 200.59…

Q: Suppose a 250. mL flask is filled with 0.80 mol of OC12, 1.4 mol of BrOCI and 0.30 mol of BrCl. The…

A: Given :  Moles of OCl2 = 0.80 mol  Moles of BrOCl = 1.4 mol  Moles of BrCl = 0.30 mol  Volume of…

Q: 20. In Figure P3.6, the red spheres represent oxygen, black represent carbon, blue represent…

A: #P.3.6: Red spheres represent O atoms. Black spheres represent C atoms. Blue spheres represent N…

Q: (in this order) that appears in the denominator of the stoichiometry conversion factor.

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Q: < Question 21 of 22 Metals lose electrons under certain conditions to attain a noble gas electron…

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Q: How much of natural uranium is U-235? Group of answer choices 0.7% 13 % 33 % 99.3 % 100%

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Q: Calculate the amount of salt in a commercial cold-pack containing ammonium nitrate (ΔHsol = + 25.7…

A: Here we are required to find the mass of ammonium nitrate in cold pack which has enthalpy of…

Q: consider the acid base reaction , HCIO4 (aq) + KOH (aq) ----> KCIO4 (aq) + H2O (l)  How many…

A: The required volume of potassium hydroxide (KOH) in mL is solved below:

Q: What is the wavelength (in nm) of a photon if the energy is 7.17 x 10-¹9 J? (h= 6.626 X 10-34 J. s)

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Q: Find the density and IPF values ​​for cristobalite.  (Si4+ ion radius: 0.039 nm, O2- ion radius:…

A: In case of Cristobalite, the structure is Si4O8. 3a/4 = (0.039 + 0.132) nm = 0.171 nm.        a =…

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A: Here we have to balance the following given redox reaction . It can be balanced by ion- elctron…

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Q: If 39.0 mL of 0.54 M H₂SO4 is diluted to a volume of 105 mL, what is the molarity of the resulting…

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Q: For a certain acid pK, = 7.12. Calculate the pH at which an aqueous solution of this acid would be…

A: Answer: In this question we have to find out pH of a solution of weak acid when pKa of weak acid and…

Q: Solve the following multiple-choice questions: Use the relative size of the 3s orbital represented…

A: Here  we have to solve the following given questions for the given  orbitals with respect 3S…

Q: Which of the following pairs co the same intermolecular forces NH₂ and CH4 H₂S and CH₂ сни H ₂0…

A: Intermolecular forces, often abbreviated to IMF, are the attractive and repulsive forces that arise…

Q: How much HCO2H is obtained by reacting 1.00 g FeS, 0.50 g H2S, and 0.50 g CO2 if the reaction…

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Q: solution of 275 mL of 0.725 M hydroiodic acid reacts with excess magnesium in single  displacement…

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Q: Given the equation: C2H6 (g) + O2 (g)  CO2 (g) + H2O (g) (not balanced) Determine the number of…

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Q: hey could someone help me label all of the chiral carbons as R or S?

A: Given : structure Tip : Apply CIP rule

Q: A chemical supplier has requested from your laboratory a sample of AgCl(s) to be shipped out as soon…

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Q: Complete and balance the following redox reaction in acidic solution. Be sure to include the proper…

A: Answer:- This question is answered by using the simple concept of balancing the redox reaction using…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.