If 30.0 mmol HCl(g)is added to 1.00 L of a buffer that is 0.340 M NH₃(aq)and 0.290 M NH₄Cl(aq),what are the final concentrations of NH₃(aq)and NH₄Cl(aq),respectively? Assume no volume change. A)0.310 M and 0.320 M B)0.310 M and 0.290 M C)0.370 M and 0.290 M D)0.370 M and 0.320 M

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Quizplus · Accepted Answer

The reaction between HCl(g) and the buffer components can be represented as HCl + NH₃ (NH₃) → NH₄Cl (NH₄Cl). 30.0 mmol of HCl will react with 30.0 mmol of NH₃, converting it to NH₄Cl. Since the volume is 1.00 L, this corresponds to a 0.030 M change in concentration. Therefore, the concentration of NH₃ decreases by 0.030 M (from 0.340 M to 0.310 M), and the concentration of NH₄Cl increases by 0.030 M (from 0.290 M to 0.320 M).

If 300 Mmol HCl(g)is Added to 1