100ml of 0.1M NaOH 50ml of 0.2M BaCl2 or 75ml of 0.15M Na3PO4 are strong electrolytes.Which contains the largest number of ions?

To determine which solution contains the largest number of ions, we need to calculate the total moles of ions produced by each solution.

1. NaOH (100ml of 0.1M): 0.1 moles/L × 0.1 L = 0.01 moles of NaOH → produces 0.01 moles Na⁺ and 0.01 moles OH⁻ = 0.02 moles of ions.

2. BaCl2 (50ml of 0.2M): 0.2 moles/L × 0.05 L = 0.01 moles of BaCl2 → produces 0.01 moles Ba²⁺ and 0.02 moles Cl⁻ = 0.03 moles of ions.

3. Na3PO4 (75ml of 0.15M): 0.15 moles/L × 0.075 L = 0.01125 moles of Na3PO4 → produces 0.03375 moles Na⁺ and 0.01125 moles PO4³⁻ = 0.045 moles of ions.

Therefore, Na3PO4 contains the largest number of ions.