Question

Determine pH value of 0.1 M HCl​

Answer 1

pH is defined as negative logarithm of H+ ion concentration.

Formula is pH=-log[H+].

Molarity of given HCl is 0.1 M.

Therefore its concentration is 10^-1mol/L,

pH=-log[10^-1]=-1(-log10)=log10=1.