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What is the acid concentration of a sample of acid rain with a pH of 4.20?

1 Answer

Nov 13, 2016

#6.3times10^-5#mol/L

Explanation:

#pH=-log_10[H^+]#

Given that #pH# is 4.2

#:. 4.2=-log_10[H+]#

#10^(-4.2)=[H^+]#

Taking antilog we get

#[H^+]=6.3times10^(-5)# mol/L

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