Science

C6H5NH2 + H2O C6H5NH3+ + OH-

1. Aniline, a weak base, reacts with water according to the rxn above.
a. A sample of aniline is dissolved in water to produce 25.0 ml of a .10 M soln. The pH of soln is 8.82. What is Kb for this rxn?
b. The soln in part b, is titrated with .10 M HCl. Calculate pH of the soln when 5 mL of acid is added.
c. Calculate pH at equivalence point of the titration in part c.
d. The pKA values for several indicators are given below. Which of the indicators is most suitable for this titration. Justify your answer.

Indicator pKa
Erythrosine 3
Litmus 7
thymolphtalein 10

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. AP Chemistry

    Write the expression of for the base dissociation constant for hydrazine, N2H4, a weak base. Hydrazine reacts with water to form the N2H5+ ion.

  2. AP Chem

    CH3CH2NH2(aq) + H2O(l) CH3CH2NH3+(aq) + OH-(aq) Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to the equation above. A 50.0 mL sample of a ethylamine solution is found to have a pH of the solution

  3. Chemistry

    NH3(aq)+H2O(l)⇄NH4+(aq)+OH−(aq) Kb=1.8×10−5 at 25C Initial [NH3] | Equilibrium [NH4+] | Equilibrium [OH−] | pOH 0.15 | 1.6×10−3 | 1.6×10−3 | 2.78 0.30 | 2.3×10−3 | ? | ? NH3 is a weak base that reacts with water

  4. Chemistry Balancing Equations

    Can you please tell me if these are correct? 1. Sodium Hydrogen Sulfite reacts with hydrochloric acid to produce sulfur dioxide gas, water and sodium chloride NaHSO3 + HCl -----> SO2 + H2O + NaCl 2. Sodium nitrate reacts with

  1. chemistry

    Carbon dioxide (CO2) reacts with water (H2O) to form carbonic acid (H2CO3). Which equation demonstrates the law of conservation of matter for this reaction? A. 2 CO + H2O —> H2CO3 B. CO2 + H2O —> H2CO3 C. CO2 + 2 H2O —> 2

  2. chemistry

    A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ΔH°comb for aniline.

  3. Chemistry

    1.Hydrogen gas can be made by reacting methane (CH4) with high temperature steam: CH4(g) + H2O(g) ----- CO(g) + 3H2(g) How many hydrogen molecules are produced when 256 grams of methane reacts with steam? 2. Ammonia (NH3) reacts

  4. Chemistry- Empirical Formula

    Aniline, consists of C, H, and N. Combustion of such compounds yields CO2, H2O, and N2. If the combustion of 9.71 mg of aniline yields 6.63 mg H2O and 1.46 mb N2, what is the empirical formula? What is the molecular formula of a

  1. Chemistry

    A solution of aniline(C6H5NH2, Kb=4.2x10^-10) has a pH of 8.69 at 25 Celsius. What was the initial concentration of aniline? I have so far don't know if it's right: *. [H3O]=10^-8.69=2x10^-9 * 4.2x10^-10=(2x10^-9)^2 / x

  2. Chemistry

    Given that Ka for HIO is 3.2 × 10-11 at 25 °C, what is the value of Kb for IO– at 25 °C? Then, Given that Kb for C6H5NH2 is 1.7 × 10-9 at 25 °C, what is the value of Ka for C6H5NH3 at 25 °C? I don't know where to start? Do

  3. Chemistry

    Which of the following statements are true about a strong base and a weak base at a pH of 11? A) HCl will not bring the pH of either solution to pH 7. B) Both bases require the same amount of HCl to reach pH 7 because they are

  4. Chemistry 2 - Acids and Bases

    Hydrazine (NH2NH2) is a weak base that ionizes in water as follows. NH2NH2(aq) + H2O(l) HNH2NH2^+(aq) + OH^−(aq) Calculate the concentration of OH^− ions in a 0.20 M solution of hydrazine, given that the base-dissociation

View more similar questions or ask a new question.