Question

What is true about a solution of 1.0 M HF?

Answer 1

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 a higher [H3O+] than a solution of 1.0 M HCl.

Answer 2

Answer:

The correct answer is  $7.2 * 10-4$.

Explanation:

Given:

Solution of 1.0 MF

To find:

pH of a solution =?

Solving the following with ICE equation,

$HF < --------- > H+ + F-$

$1.00$                 $0$           $0$

$C -x$           $+x$          $+x$

$E 1-x$        $x$              $x$

Let $k_{a}$ for $HF$ is 7.2 x 10-4..

Now it is $k_{a}$ = $\frac{H+}{F-} / H F$

Therefore, the solution is 7.2 x 10-4 for 1.0 MF.

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