What is true about a solution of 1.0 M HF? HF has a higher [OH-] than a solution of 1.0 M HCl. HF has a lower pH than a solution

Question

WINSTONCH [101]

3 years ago

7

What is true about a solution of 1.0 M HF? HF has a higher [OH-] than a solution of 1.0 M HCl. HF has a lower pH than a solution

of 1.0 M HCl. HF has the same pH as a 1.0 M solution of 1.0 M HCl. HF has a higher [H3O+] than a solution of 1.0 M HCl.

Chemistry

2 answers:

Wittaler [7] · Answer 1 · 2022-02-26T12:47:22+03:00

Wittaler [7]3 years ago

6 0

<span>HF has a higher [OH-] than a solution of 1.0 M HCl. is the answer</span>

Nonamiya [84] · Answer 2 · 2022-02-26T14:05:59+03:00

Answer:

HF has a higher [OH-] than a solution of 1.0 M HCl.

Explanation:

HF is a weak acid. It will be weakly dissociated to give hydrogen ions.

HCl is a strong acid. It will dissociate almost completely so will give more hydrogen ions as compared to HF.

So

a) 1.0 M HF will have lower H₃O⁺ as compared to 1.0 M of HCl.

b) Due to less H₃O⁺ of HF,it will have higher pH as compared to HCl.

c) The product of concentration of H₃O⁺ and OH⁻ is constant at a constant temperature. So if a solution has lower H₃O⁺ as compared to other solution (HCl), it will have higher concentration of OH⁻.

Thus HF has higher OH⁻ concentration than a solution of HCl, of same concentration.