1.

Mixture of solutions. Calculate the pH of the following solutions.K_1= 7.5 xx 10^(-3) M, K_2= 6.2 xx 10^(-8)M , K_3 =1.0 xx 10^(-12)M 50 ml of 0.12 M H_3PO_4 + 40 ml of 0.15 M NaOH ,

Answer»


ANSWER :4.66


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