Question

What is the hydroxide concentration in 0.093 M Nitric acid?

Answer 1

Given: Molarity of nitric acid = 0.093 M

To Find:- concentration of hydroxide ions

Solution:-

- The reaction of nitric acid (HNO3) with water is represented below:-

HNO3 + H2O (l) ---> H3O^(+) (aq) + NO3^(-) (aq)

- The molarity of HNO3 is given

= 0.093 M

- So, The reaction with the concentration is

HNO3 +H2O (l) --> H3O^(+) +NO3^(-)

0.093 M 0.093 M 0.093M

- So, The solution will have 0.093 M of hydrogen ions .

- As we know that due to ion product constant of water the ions of hydroxide and hydrogen are relatable by expression,

Kw = [H^(+1)][OH^(-1)]

- As, the value of water constant is,

Kw = 1.0 × 10^(-14) M

- By putting value in equation we have,

1.0 × 10^(-14) = [0.093][OH^(-1)]

[OH^(-1)] = 0.093/1.0 × 10^(-14)

[OH^(-1)] = 1.0 × 10^(-13) M

- Hence, The concentration of hydroxide ion is 1.0 × 10^(-13) M.