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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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yexiu yexiu
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3 years ago
An aqueous solution is prepared by dissolving 0.23 mol of nitrous acid and 0.27 mol of sodium nitrite in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of HCl to this buffer solution causes the pH to drop slightly. The pH does not decrease drastically because the HCl reacts with the ________ present in the buffer solution. The Ka of nitrous acid is 1.36 × 10-3.

▸ H2O

▸ H3O+

▸ nitrite ion

▸ nitrous acid

▸ This is a buffer solution: the pH does not change at all upon addition of acid or base.
Textbook 
General Chemistry: Principles and Modern Applications

General Chemistry: Principles and Modern Applications


Edition: 11th
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AizhanAizhan
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