Question

A tudent prepare a buffer by placing ammonium chloride in a olution of ammonia. Equilibrium i etablihed according to the equation: NH3 H2O⇄NH4OH-
When a large amount of KOH i added to the buffer, the bae react with A. OH- and the pH decreae
B. NH4 and the pH increae
C. NH3 to keep the pH relatively contant
D. NH4 to keep the pH relatively contant

Answer 1

NH₂ to keep the pH relatively contant. When KOH is added to the buffer, it reacts with the ammonium ion (NH₄⁺) to form ammonia (NH₃) and water.

What is pH?

pH is a measure of the acidity or basicity of a solution. It is typically measured on a scale of 0 to 14, with 7 being neutral. A solution with a pH of less than 7 is considered acidic, and a solution with a pH greater than 7 is considered basic or alkaline. The scale is logarithmic, which means that each point on the scale is 10 times more or less acidic or basic than the one before it. pH is important in many processes, including the body's metabolism, so it is essential to monitor and maintain the proper pH levels in order for things to function properly.

This reaction helps to keep the pH relatively constant, as the NH3 produced is quickly converted back into NH4+ by the remaining ammonium chloride.

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