What mass of sodium chloride is produced when 5.4 g of iron
chloride are used?

5.0 g

Explanation:

Step 1: Write the balanced equation

FeCl₂ + 2 Na⁺ = 2 NaCl + Fe²⁺

Step 2: Calculate the moles corresponding to 5.4 g of FeCl₂

The molar mass of FeCl₂ is 126.75 g/mol.

5.4 g × 1 mol/126.75 g = 0.043 mol

Step 3: Calculate the moles of NaCl produced from 0.043 moles of FeCl₂

The molar ratio of FeCl₂ to NaCl is 1:2. The moles of NaCl produced are 2/1 × 0.043 mol = 0.086 mol.

Step 4: Calculate the mass corresponding to 0.086 moles of NaCl

The molar mass of NaCl is 58.44 g/mol.

0.086 mol × 58.44 g/mol = 5.0 g

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