Answer to Question #150035 in General Chemistry for cyrus forbile

Question

identify the limiting agent if 50.0 g Ag reacts with 10.0 g S

Answer 1

2Ag + S $\rightarrow$ Ag₂S

For one mole of sulphur there should be two moles of silver for complete reaction.

Moles of silver = 50/108 = 0.46 moles

Moles of elemental sulphur = 10/32 = 0.3125 moles

For 0.3125 moles of sulphur there must be 0.6250mole of silver.

So silver is limiting Reagent.