Effect of Mixing Strong Acid with Weak Base

Hard General Chemistry Acids And Bases

A strong acid solution of hydrochloric acid (HCl) and a weak base solution of sodium bicarbonate (NaHCO3) are mixed together in equal volumes. The initial pH of the HCl solution is 1.0, while the initial pH of the NaHCO3 solution is 8.4. After mixing, which of the following statements is correct regarding the pH of the resulting solution?

The resulting solution will have a pH less than 7.

The resulting solution will have a pH of exactly 7.

The resulting solution will have a pH greater than 7 but less than 9.

The resulting solution will have a pH greater than 9.

Hint

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