Question

Consider the reaction, NH3 + H2O → NH4+ + OH-. Choose the answer below that correctly labels each substance as a Bronsted-Lowry acid, base, conjugate acid or conjugate base.

A. NH3 is an acid, H2O is a base, NH4+ is a conjugate acid and OH- is a conjugate base.
B. NH3 is a base, H2O is an acid, NH4+ is a conjugate base and OH- is a conjugate acid.
C. NH3 is a base, H2O is an acid, NH4+ is a conjugate acid and OH- is a conjugate base.
D. NH3 is an acid, H2O is a base, NH4+ is a conjugate base and OH- is a conjugate acid.

Answer 1

In the reaction NH3 + H2O → NH4+ + OH-, NH3 acts as a base, H2O acts as an acid, NH4+ is the conjugate acid of NH3, and OH- is the conjugate base of H2O.

Step-by-step explanation:

In the reaction NH3 + H2O → NH4+ + OH-, NH3 acts as a base by accepting a proton from water, which makes water act as an acid. Therefore, NH3 is the base and H2O is the acid in this reaction. NH4+ is the conjugate acid of NH3, and OH- is the conjugate base of H2O.

Answer 2

The reaction between NH3 and H2O, where NH3 is the base and H2O is acid, results in NH4+ as the conjugate acid and OH- as the conjugate base, making option C the correct answer.

Step-by-step explanation:

The correct answer to the question 'Consider the reaction, NH3 + H2O → NH4+ + OH-. Choose the answer below that correctly labels each substance as a Bronsted-Lowry acid, base, conjugate acid, or conjugate base.' is option C. In the reaction, NH3 acts as a base as it accepts a proton (H+), and H2O acts as an acid by donating the proton. After the reaction, NH4+ is the conjugate acid of NH3, and OH- is the conjugate base of H2O.