Question

[Nguyễn Thái Sơn]

1) Tinh pH cua dung dich sau:

a) 0,5 l dd HCl co hoa tan 224ml khi HCl o dktc

Answer 1

[Edogawa Conan]

a, \(n_{HCl}=\dfrac{0,224}{22,4}=0,01\left(mol\right)\Rightarrow n_{H^+}=0,01.1=0,01\left(mol\right)\)

  \(\Rightarrow\left[H^+\right]=\dfrac{0,01}{0,5}=0,02M\Rightarrow pH=-log\left(0,02\right)\approx1,7\)