Answer:
Mass of CaCO₃ = 3 g
Step-by-step explanation:
Given data:
Mass of sodium carbonate = 3.25 g
Mass of calcium carbonate produced = ?
Solution:
Chemical equation:
CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl
Moles of Na₂CO₃:
Number of moles = mass/ molar mass
Number of moles = 3.25 g / 106 g/mol
Number of moles = 0.03 mol
Now we will compare the moles of sodium carbonate with calcium carbonate.
Na₂CO₃ : CaCO₃
1 : 1
0.03 : 0.03
Mass of calcium carbonate:
Mass = number of moles × molar mass
Mass = 0.03 mol × 100 g/mol
Mass = 3 g