Question

Write the balanced equation for the reaction between Cl₂ and Na to produce NaCl. Outline the steps to determine the number of moles and the mass of Cl₂ required to react with 10.0 g of Na.

A) Cl₂(g) + 2Na(s) → 2NaCl(s); Calculate moles of Na, use mole ratio to find moles of Cl₂, convert moles of Cl₂ to grams.
B) 2Cl₂(g) + 2Na(s) → 2NaCl(s); Convert grams of Na to moles, use mole ratio to find moles of Cl₂, convert moles of Cl₂ to grams.
C) Cl₂(g) + Na(s) → NaCl(s); Calculate moles of Na, use mole ratio to find moles of Cl₂, convert moles of Cl₂ to grams.
D) 3Cl₂(g) + 4Na(s) → 4NaCl(s); Convert grams of Na to moles, use mole ratio to find moles of Cl₂, convert moles of Cl₂ to grams.

Answer 1

The correct balanced chemical equation is 2 Na (s) + Cl₂ (g) → 2 NaCl (s). To find the moles and mass of Cl₂ required for 10.0 g Na, first calculate moles of Na, then use the 1:1 mole ratio to find moles of Cl₂, and finally convert moles of Cl₂ to grams using its molar mass.

Step-by-step explanation:

The balanced chemical equation for the reaction between chlorine gas (Cl₂) and sodium (Na) to produce sodium chloride (NaCl) is 2 Na (s) + Cl₂ (g) → 2 NaCl (s). To determine the number of moles and mass of chlorine gas required to react with 10.0 g of sodium, follow these steps:

Calculate the moles of sodium by dividing its mass by its molar mass (22.99 g/mol).

Use the mole ratio from the balanced equation to find the moles of chlorine gas. Since the ratio is 1:1 between Na and Cl₂, use the same quantity of moles for chlorine gas.

Convert the moles of chlorine gas to grams using its molar mass (70.90 g/mol).

The correct answer is A): Cl₂(g) + 2Na(s) → 2NaCl(s); Calculate moles of Na, use mole ratio to find moles of Cl₂, convert moles of Cl₂ to grams.