Question

H2SO4 with a molarity of .4M
Calculate pH

Answer 1

Answer : The pH of 0.4 M
`H_2SO_4` is

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^+]`

`H_2SO_4\rightarrow 2H^++SO_4^(2-)`

According to stoichiometry,

1 mole of
`H_2SO_4` gives 2 mole of
`H^+`

Thus 0.4 moles of
`H_2SO_4` gives =
`(2)/(1)* 0.4=0.8` moles of
`H^+`

Putting in the values:

`pH=-\log[0.8]`

`pH=0.096`

Thus pH is 0.096.