How many moles of NA + ions are in 250 ml of a0.10ml solution of sodium chloride?

Question

Chemistry problem. I have no idea how to do this

Answer 1

Sodium chloride, NaCl is a strong electrolyte  in water (this is for all soluble ionic compounds) which indicates that it is complete dissociated into cations (Na⁺) and anions (C^l-): NaCl(aq) → Na⁺(aq) + Cl^-(aq)

Based on the stoichiometry of the reaction (1 mole of NaCl(aq) forms 1 mole of Na⁺(aq): #mol Na⁺ = #mol NaCl

with: # mol NaCl = molarity NaCl (mol/L) x Volume (L)

# mol NaC= 0.10 (mol/L) x 250 mL x (1L/1000 mL) = 0.025 mol NaCl

Since #mol Na⁺ = #mol NaCl

Then: #mol Na⁺ = 0.025 mol Na⁺