Question

Calculate the pHpH of a 0.10 MM solution of HClHCl . Express your answer numerically using two decimal places.

Answer 1

Answer: The pH 0f 0.10 solution of HCl is 1.00

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.

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

$HCl\rightarrow H^++Cl^{-}$

According to stoichiometry,  

1 mole of $HCl$ gives 1 mole of $H^+$  

Thus $0.10$ moles of $HCl$ gives =$\frac{1}{1}\times 0.10=0.10$ moles of $H^+$  

Putting in the values:

$pH=-\log[0.10]$

$pH=1.00$

Thus pH 0f 0.10 solution of HCl is 1.00