What is the pH of a 0.001 M solution of sodium bicarbonate (NaHCO3)?

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Question: What is the pH of a 0.001 M solution of sodium bicarbonate (NaHCO3)?

Options:

Correct Answer: 8.4

Solution:

Sodium bicarbonate is a weak base. The pH can be estimated to be around 8.4 for a 0.001 M solution.

What is the pH of a 0.001 M solution of sodium bicarbonate (NaHCO3)?

What is the pH of a 0.001 M solution of sodium bicarbonate (NaHCO3)?

Step 1: Understand that sodium bicarbonate (NaHCO3) is a weak base.
Step 2: Know that weak bases do not fully dissociate in water, meaning they do not release all their hydroxide ions (OH-).
Step 3: Recognize that the concentration of the sodium bicarbonate solution is 0.001 M.
Step 4: Use the approximate pH value for weak bases; for sodium bicarbonate, a 0.001 M solution typically has a pH around 8.4.
Step 5: Conclude that the pH of the 0.001 M sodium bicarbonate solution is approximately 8.4.

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