Question

A buffer consists of NH4 and NH3 (ammonia). Write the equation for the reaction that occurs...

A buffer consists of NH4 and NH3 (ammonia). Write the equation for the reaction that occurs when strong base (OH–) is added to the buffer.

Write the equation for the reaction that occurs when strong acid (H3O ) is added to the buffer.

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Answer #1

When a Strong Base (OH-) is added in the Buffer the basicity has to be controlled by absorbing (OH-). The reaction taking place will be as following:

            NH4+ (aq.) + OH- (aq.) = NH3 (aq.) + H2O (aq.)

When a Strong Acid (H3O+) is added in the Buffer the acidity has to be controlled by absorbing (H+). The reaction taking place will be as following:

            NH3 (aq.) + H3O+ (aq.) = NH4+ (aq.) + H2O (aq.)

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