In the reaction HCl + NH3 → NH4+ + Cl−, which species is the conjugate base?

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Multiple Choice

In the reaction HCl + NH3 → NH4+ + Cl−, which species is the conjugate base?

Explanation:
In acid-base chemistry, the conjugate base is what remains after an acid donates a proton. In this reaction, HCl donates a proton to NH3, so HCl becomes Cl−. Therefore, Cl− is the conjugate base of the acid HCl. The other pair is NH3 giving NH4+ (the conjugate acid of NH3). So the species formed that corresponds to the conjugate base is chloride ion, Cl−.

In acid-base chemistry, the conjugate base is what remains after an acid donates a proton. In this reaction, HCl donates a proton to NH3, so HCl becomes Cl−. Therefore, Cl− is the conjugate base of the acid HCl. The other pair is NH3 giving NH4+ (the conjugate acid of NH3). So the species formed that corresponds to the conjugate base is chloride ion, Cl−.

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