Question

Calculate ph of decimolar solution of baryta diluted 100 times

Answer 1

Answer : The pH of decimolar solution is, 5

Solution : Given,

Concentration of the solution = $10^{-3}M$      $(1decimolar=10^{-3}molar)$

That means the initial concentration of solution = $10^{-3}M$

When the initial concentration of the solution is diluted 100 times then the concentration of the solution will be,  $\frac{10^{-3}M}{100}=10^{-5}M$

$[H_3O^+]=10^{-5}M$

Now we have to calculate the pH of the solution.

$pH=-\log [H_3O^+]$

$pH=-\log (10^{-5}M)$

$pH=5$

Therefore, the pH of decimolar solution is, 5