In which of the following reactions does NH_3 | vedclass

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(C) An acid is defined as a substance that can donate a proton $(H^{+})$. In the reaction $NH_3 + Na \rightarrow NaNH_2 + \frac{1}{2}H_2$,the ammonia

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$NH_3 + Na \rightarrow NaNH_2 + \frac{1}{2}H_2$

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(C) An acid is defined as a substance that can donate a proton $(H^{+})$. In the reaction $NH_3 + Na \rightarrow NaNH_2 + \frac{1}{2}H_2$,the ammonia molecule loses a proton to form the amide ion $(NH_2^-)$. Since $NH_3$ acts as a proton donor here,it behaves as a Brønsted-Lowry acid. In the other reactions,$NH_3$ acts as a base by accepting a proton.

In which of the following reactions does $NH_3$ act as an acid?

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