The volume of HCl, containing , required to completely neutralise NaOH obtained by reacting 0.69 g of metallic sodium with water, is mL. (Nearest Integer)

(Molar masses: Na = 23, Cl = 35.5, O = 16,

Question

The volume of HCl, containing , required to completely neutralise NaOH obtained by reacting 0.69 g of metallic sodium with water, is  mL. (Nearest Integer)

(Molar masses: Na = 23, Cl = 35.5, O = 16, H = 1 g/mol respectively)

Canvas Classes · Accepted Answer

Step 1 — Moles of Na:

Step 2 — Reaction of Na with water:

Moles of NaOH = moles of Na = 0.03 mol

Step 3 — Molarity of HCl solution:

Step 4 — Volume of HCl needed:

Moles of HCl = 0.03 mol

Answer: 15 mL

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