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EquilibriumMCQ

1.0 L of an aqueous solution in which [H2CO3] = [HCO3–] = 0.10 M, has [H+] = 4.2 × 10–7. What is the — Equilibrium Chemistry Question

Question

1.0 L of an aqueous solution in which [H2CO3] = [HCO3–] = 0.10 M, has [H+] = 4.2 × 10–7. What is the [H+] after 0.005 mole of NaOH has been added?

A.

2.1 × 10–9 M

B.

2.2 × 10–8 M

C.

3.8 × 10–7 M

✓ Correct
D.

4.6 × 10–7 M

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