How many grams of KCI are produced from 1.34 moles of 012? 2 K + Cl2 --> 2 KCI

Question

a. 2.68 g KCI

b. 100. g KCI

c. 148 g KCI

d. 200. g KCI

Answer 1

Hello, Saul,

The balanced equation says we'll get 2 moles of KCl for every one mole of Cl₂. I'll assume you meant Cl₂ and not O₁₂, although that would be an interesting molecule. [Elon Musk would love to fill his Mars probe with this mighty oxidant.]

If all of the 1.34 moles of Cl₂ are consumed, we would expect 2.68 moles of KCl (assuming K is not the limiting reagent). To get grams KCl, multiply the moles KCl by it's molar mass (75.5 g/mole). This looks very close to the 200 gram option.

Bob