Question

In: Chemistry

Calculate the pH of 0.14 M RbOCl solution

Expert Solution

RbOCl(aq) ------------------> Rb^+ (aq) + OCl^- (aq)

0.14M 0.14M

OCl^- (aq) + H2O ----------------> HOCl(aq) + OH^-(aq)

I 0.14 0 0

C -x +x +x

E 0.14-x +x +x

Kb = Kw/Ka

= 1*10^-14/3.5*10^-8

= 2.86*10^-7

Kb = [HOCl][OH^-]/[OCl^-]

2.86*10^-7 = x*x/0.14-x

2.86*10^-7 *(0.14-x) = x^2

x = 0.0002

[OH^-] =x = 0.0002M

POH = -log[OH^-]

= -log0.0002

=3.6989

PH = 14-POH

= 14-3.6989

= 10.3011 >>>>answer

queen_honey_blossom answered 2 years ago

Calculate the pH after 0.14 mole of NaOH is added to 1.09 L of a solution...

Calculate the pH after 0.14 mole of NaOH is added to 1.09 L of a solution that is 0.49 M HNO2 and 1.18 M NaNO2, and calculate the pH after 0.28 mole of HCl is added to 1.09 L of the same solution of HNO2 and NaNO2. 0.14 mole of NaOH 0.28 mole of HCl

What is the pH of the solution that results from adding 26.2 mL of 0.14 M...

What is the pH of the solution that results from adding 26.2 mL of 0.14 M to 25.9 mL of 0.41 MNH3? (Ka for ammonium ion is 5.6*10^-10). pH-------------------?

Calculate the pH of a 0.040 M solution of CH3CO2H.

Calculate the pH of a 0.2 M solution of LiHCO3

Calculate the pH of a 0.89 M methylamine solution.

Calculate the concentration of all species in a 0.14 M KF solution. [K+], [F−], [HF], [OH−],...

Calculate the concentration of all species in a 0.14 M KF solution. [K+], [F−], [HF], [OH−], [H3O+] please give each value clearly

pH and Activity Calculate the pH of a solution which is 0.0010 M in KOH and...

pH and Activity Calculate the pH of a solution which is 0.0010 M in KOH and 0.013 M in NaNO3 using activities. Calculate a pH for the same solution, ignoring activities

Calculate the ph of a solution that is 0.30 M in ammonia (NH3) and 0.20 M...

Calculate the ph of a solution that is 0.30 M in ammonia (NH3) and 0.20 M in ammonium chloride. Kb=1.76 x 10^-5 Then calculate the ph if you add 10 mL of 1.0 M HCl to 50 mL of your solution in the problem above.

Calculate the pH of a solution that is .150 M in benzoic acid and .190 M...

Calculate the pH of a solution that is .150 M in benzoic acid and .190 M in sodium benzoate

1. Calculate the pH of a 0.10 M ammonia solution. 2. Calculate pH when the following...

1. Calculate the pH of a 0.10 M ammonia solution. 2. Calculate pH when the following volumes of 0.10 M HCl are added to 20.0 mL of 0.10 M ammonia solution. a. 5.0 mL b. 10.0 mL c. 15.0 mL d. 20.0 mL e. 25.0 mL 3. What are the major species present under the conditions in 2. 4. Sketch the titration Curve .5. What was the pH at the equivalence point ( where equal amounts of acid and base...