(JEE Main 2020) The number of ions in of solution is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
(JEE Main 2020) The number of $Cl^-$ ions in $100 \text{ mL}$ of $0.001 \text{ M } HCl$ solution is:
Answer: B
💡 Solution & Explanation
$\text{Moles } Cl^- = 0.1 \text{ L} \times 0.001 \text{ M} = 10^{-4} \text{ mol}$. <br>$\text{Ions} = 10^{-4} \times 6.022 \times 10^{23} = 6.022 \times 10^{19}$.
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