reaction stoichiometry

Question

The unbalanced equation for the reaction between chlorine gas and sodium iodide is shown below.

Balance the equation (enter the smallest integer possible in each box, including the integer "1" when needed) and determine the amount of NaI consumed and the amounts of NaCl and I₂ produced when 0.947 mol of Cl₂ reacts.

1. Cl₂ (g) + fill in the blank NaI (s) fill in the blank NaCl (s) + fill in the blank I₂ (s)
2.  fill in the blank mol NaI consumed
3. fill in the blank  mol NaCl produced
4. fill in the blank  mol I₂ produced

Answer 1

Again, we begin with a correctly balanced equation:

1 Cl₂(g) + 2NaI(s) ==> 2NaCl(s) + 1 I₂(s) ... balanced equation

Using the stoichiometry of the balanced equation and dimensional analysis, we can answer the question as follows:

0.947 mol Cl₂ x 2 mol NaI / 1 mol Cl₂ = 1.89 moles NaI consumed

0.947 mol Cl₂ x 2 mol NaCl / 1 mol Cl₂ = 1.89 moles NaCl produced

0.947 mol Cl₂ x 1 mol I₂ / 1 mol Cl₂ = 0.947 moles I₂ produced