select the correct answer. which statement correctly relates two substances in this chemical equation? nh₃ +…

select the correct answer. which statement correctly relates two substances in this chemical equation? nh₃ + h₂o ⇌ oh⁻ + nh₄⁺ a. h₂o is the conjugate base of oh⁻. b. h₂o is the conjugate acid of nh₃. c. nh₄⁺ is the conjugate acid of nh₃. d. nh₃ is the conjugate acid of nh₄⁺. e. oh⁻ is the conjugate base of nh₃.

select the correct answer. which statement correctly relates two substances in this chemical equation? nh₃ + h₂o ⇌ oh⁻ + nh₄⁺ a. h₂o is the conjugate base of oh⁻. b. h₂o is the conjugate acid of nh₃. c. nh₄⁺ is the conjugate acid of nh₃. d. nh₃ is the conjugate acid of nh₄⁺. e. oh⁻ is the conjugate base of nh₃.

Answer

Explanation:

Step1: Recall conjugate - acid base pair concept

A conjugate acid is formed when a base accepts a proton ($H^+$), and a conjugate base is formed when an acid donates a proton.

Step2: Analyze the reaction for $NH_3$

In the reaction $NH_3 + H_2O\rightleftharpoons OH^-+NH_4^+$, $NH_3$ (a base) accepts a proton from $H_2O$ to form $NH_4^+$. So, $NH_4^+$ is the conjugate acid of the base $NH_3$.

Step3: Analyze other options

  • Option A: The conjugate base of $OH^-$ is $O^{2 -}$, not $H_2O$.
  • Option B: $H_2O$ is not the conjugate acid of $NH_3$.
  • Option D: $NH_3$ is the conjugate base of $NH_4^+$, not the conjugate acid.
  • Option E: $OH^-$ is not the conjugate base of $NH_3$.

Answer:

C. $NH_4^+$ is the conjugate acid of $NH_3$.