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Chemistry · Studypool

CSCC Percent Yield and Limiting Reactants Exercises

Overview

Hello, I have been struggling on these two problems. They're both multiple choice, please provide an answer.

1) 0.500 mol aluminum nitrate react with 1.80mol of lithium in a single replacement reaction. If 88.3 grams of lithium nitrate were isolated in the lab, what is the percent yield of the lithium nitrate?

3Li +Al(NO3)3 → 3 LiNO3 + Al

options

85.3%

72.7%

96.6%

47.3%

2) Identify the limiting reagent and the volume of CO2 formed when 5 moles of CS2 reacts with 18 moles of O2 to produce carbon dioxide gas and sulfur dioxide gas.

CS2(g) + 3O2(g) → CO2(g) + 2SO2(g)

options

CS2; 11 moles CO2

O2; 6 moles CO2

CS2; 5 moles CO2

O2; 27 moles CO2