Question

7. Sodium chloride is produced from its elements through a synthesis reaction. What mass of each reactant would be required to produce 25.0 mol of sodium chloride?

Na + Cl2 → NaCl.

Answer 1

Mass of Cl₂ = 887.5 g

Mass of Na = 575 g

Step-by-step explanation:

Given data;

Number of moles of sodium chloride produced = 25.0 mol

Mass of Na required = ?

Mass of Cl₂ required = ?

Solution:

Chemical equation:

2Na + Cl₂ → 2NaCl

now we will compare the moles of sodium chloride with both reactant.

NaCl : Na

2 : 2

25.0 : 25.0

NaCl : Cl₂

2 : 1

25.0 : 1/2 ×25.0 = 12.5 mol

Mass of Na:

Mass = number of moles × molar mass

Mass = 25.0 mol × 23 g/mol

Mass = 575 g

Mass of Cl₂:

Mass = number of moles × molar mass

Mass = 12.5 mol × 71 g/mol

Mass = 887.5 g