Cl – is the conjugate base of — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

# Identifying the Conjugate Base of Cl⁻ **Concept**: A conjugate base is formed when an acid donates a proton ($H^+$). Conversely, the conjugate base of a species is what remains after it loses an $H^+$. **Step-by-step reasoning**: 1. **Start with $Cl^-$**: If $Cl^-$ is the conjugate base, we need to find what acid it came from. 2. **Add a proton**: Adding $H^+$ to $Cl^-$ gives: $$Cl^- + H^+ \rightarrow HCl$$ 3. **Identify the acid**: $HCl$ (hydrochloric acid) is the conjugate acid of $Cl^-$. 4. **Verify the relationship**: - $HCl$ is a strong acid that donates its proton - When $HCl$ loses $H^+$, it forms $Cl^-$ (the conjugate base) **Answer**: The conjugate base $Cl^-$ corresponds to **$HCl$** (hydrochloric acid). Without seeing the options, option **B** must be $HCl$ or an equivalent representation of hydrochloric acid.