The pressure of co2 is 3.0 atm. what is the concentration of carbonic acid in club...

The pressure of co2 is 3.0 atm. what is the concentration of carbonic acid in club soda?

Co2(aq)+H2O(l)<=> H2CO3(aq)
It needs to use Henry's Law.
What is the PH of club soda? assume that the carbonic acid dissociates to whatever extent it should.

Expert Solution

Henry's law

concentration = constant x pressure

So,

concentration of carbonic acid = 3.1 x 10^-2 x 3

= 9.3 x 10^-2 M

H2CO3 + H2O <==> HCO3- + H3O+

Ka1 = 4.5 x 10^-7 = x^2/0.093

x = [H3O+] = 2.046 x 10^-4 M

pH = -log[H3O+] = 3.69

queen_honey_blossom answered 2 years ago

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