Question

nahco₃ + hcl → nacl + h₂o + co₂
nahco₃: 84.01 g/mol
a particular sealed container can hold
0.261 mol co₂ gas. what mass of
nahco₃ is needed to generate the co₂?
? g nahco₃
hint: use stoichiometry.
mass nahco₃ (g)

Explanation:

Step1: Find mole ratio of NaHCO₃ to CO₂

From the balanced equation, 1 mol NaHCO₃ → 1 mol CO₂, so ratio = 1:1.

Step2: Calculate moles of NaHCO₃

Moles of NaHCO₃ = moles of CO₂ = 0.261 mol.

Step3: Compute mass of NaHCO₃

Mass = moles × molar mass = 0.261 mol × 84.01 g/mol ≈ 21.9 g.

Answer:

21.9 g NaHCO₃