1.

A.50ml of 0.2M NH3 + 50ml of 0.1M HClB.50ml of 0.2M NH3+ 50ml of 0.2M HClC.50ml of 0.2M HCl + 50ml of 0.2M NaOHD.50ml of 0.1M CH3COOH + 50ml of 0.1M NaOH ​

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