Understanding Molarity
* Molarity (M) is a measure of concentration. It tells you the number of moles of a solute (the substance being dissolved) per liter of solution.
* A 1M solution of NaCl means there is 1 mole of NaCl dissolved in every liter of solution.
Dissociation of NaCl
* Sodium chloride (NaCl) is a strong electrolyte, meaning it completely dissociates (breaks apart) into its ions when dissolved in water:
NaCl (aq) → Na⁺ (aq) + Cl⁻ (aq)
Calculating Moles of Ions
* For every 1 mole of NaCl, you get 1 mole of Na⁺ ions and 1 mole of Cl⁻ ions.
Therefore, in 1 liter of a 1M NaCl solution:
* There are 1 mole of sodium ions (Na⁺).
* There are 1 mole of chloride ions (Cl⁻).
