Question

22
find the pH of the solution if the tion
concenteretion is 5mole in 5oml of solution
​

Answer 1

TOPIC :- IONIC EQUILIBRIUM

CONCEPT :- To find pH of a solution, we need H+ ion concentration in molarity.

FORMULA

• Molarity = $\frac{no \: of \: moles \: of \: hydrogen \: ion}{volume \: of \: solution}$

• pH = $- log(H+ )$

CALCULATIONS

Given,

no. of moles of solute = 5 mole

Volume of solution = 50 ml = 5 × 10^-2 l

Hence, molarity =

$\frac{5}{5 \times {10}^{ - 2} } = {10}^{2}$

Hence, pH = - log(H+)

= - log (10^2)

= - 2 Ans.