Calculate the [H⁺] in 1 $\times$ 10^-7;K_a2 = 5 $\times$ 10^-11) $\times$ 10^-6 M
B)6

Multiple Choice

Calculate the [H⁺] in 1.0 M solution of Na₂CO₃ (for H₂CO₃,K_a1 = 4.3 $\times$ 10^-7;K_a2 = 5.6 $\times$ 10^-11) .

A) 7.5 $\times$ 10^-6 M
B) 6.6 $\times$ 10^-4 M
C) 1.3 $\times$ 10^-2 M
D) 7.5 $\times$ 10^-13 M
E) none of these