Question

how many moles of lead chloride will be formed from a reaction between 6.5 gram of lead oxide and 3.2 gram of hydrochloric acid

Answer 1

Approx. 0.03 mol PbCl2

Explanation:

First of all, write out the reaction.

PbO + 2HCl = PbCl2 + H2O

6.5g PbO x 1mol PbO/223 g = 0.03 mol PbO

3.2g HCl x 1mol HCl/36.5g = 0.088 mol HCl

From this, we can conclude that PbO is the limiting reactantTherefore, we will use PbO to figure out the number of moles of PbCl2.

0.03 mol PbO x 1mol PbCl2/1molPbO = 0.03 mol PbO.