Photo AI
The following equation represents a chemical system in equilibrium: \[ \text{OCl}^-(aq) + \text{H}_2\text{O}(l) \rightleftharpoons \text{HOCl}(aq) + \text{OH}^-(aq) \] Which of the following is an acid/base conjugate pair? (A) \( \text{H}_2\text{O} / \text{HOCl} \) (B) \( \text{HOCl} / \text{OH}^- \) (C) \( \text{HCl} / \text{OCl}^- \) (D) \( \text{OCl}^- / \text{H}_2\text{O} \) - HSC - SSCE Chemistry - Question 12 - 2060 - Paper 1
Question 12
![The-following-equation-represents-a-chemical-system-in-equilibrium:--\[-\text{OCl}^-(aq)-+-\text{H}_2\text{O}(l)-\rightleftharpoons-\text{HOCl}(aq)-+-\text{OH}^-(aq)-\]--Which-of-the-following-is-an-acid/base-conjugate-pair?--(A)-\(-\text{H}_2\text{O}-/-\text{HOCl}-\)-(B)-\(-\text{HOCl}-/-\text{OH}^--\)-(C)-\(-\text{HCl}-/-\text{OCl}^--\)-(D)-\(-\text{OCl}^--/-\text{H}_2\text{O}-\)-HSC-SSCE Chemistry-Question 12-2060-Paper 1.png](https://cdn.simplestudy.io/assets/backend/uploads/question/subject_1011_paper_14144_q12_67bc4038.jpg)
The following equation represents a chemical system in equilibrium: \[ \text{OCl}^-(aq) + \text{H}_2\text{O}(l) \rightleftharpoons \text{HOCl}(aq) + \text{OH}^-(aq)... show full transcript
Worked Solution & Example Answer:The following equation represents a chemical system in equilibrium: \[ \text{OCl}^-(aq) + \text{H}_2\text{O}(l) \rightleftharpoons \text{HOCl}(aq) + \text{OH}^-(aq) \] Which of the following is an acid/base conjugate pair? (A) \( \text{H}_2\text{O} / \text{HOCl} \) (B) \( \text{HOCl} / \text{OH}^- \) (C) \( \text{HCl} / \text{OCl}^- \) (D) \( \text{OCl}^- / \text{H}_2\text{O} \) - HSC - SSCE Chemistry - Question 12 - 2060 - Paper 1
Step 1
Which of the following is an acid/base conjugate pair?
Answer
To identify the acid/base conjugate pair from the chemical equilibrium equation, we need to recognize that an acid donates a proton (H+) and a base accepts a proton.
In the given reaction:
- ( \text{HOCl} ) is the weak acid, as it can donate a proton.
- ( \text{OCl}^- ) is its conjugate base, formed after ( \text{HOCl} ) donates a proton.
Thus, the correct acid/base conjugate pair from the options is (C) ( \text{HOCl} / \text{OCl}^- ).