Question

Equal volume of two HCL solution of Ph = 3 and Ph=5 where mixed. What is the Ph of the resulting solution

Answer 1

let we can take the value be V. list has equal volume.

Answer 2

The pH of the resulting solution is 3.3

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.

1. pH = 3

$pH=-\log [H^+]$

Putting in the values:

$3=-\log[H^+]$

$[H^+]=10^{-3}$

2. pH = 5

$pH=-\log [H^+]$

Putting in the values:

$5=-\log[H^+]$

$[H^+]=10^{-5}$

Thus total $[H^+]=\frac{10^{-3}+10^{-5}}{2}=\frac{10^{-3}(1+10^{-2})}{2}=0.0005$

pH of resulting solution , $pH=-\log[H^+]=-\log[0.0005]=3.3$

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