Worksheet: Equivalents and Limiting Reagents

In this worksheet, we will practice calculating the number of equivalents of reactants and using reaction stoichiometry to identify limiting reagents.

Q1:

What mass of sodium carbonate is needed to neutralize 5.92 kg of nitric acid? Give your answer to three significant figures.

Q2:

Airbags are inflated by decomposing sodium azide (NaN)3 to produce nitrogen gas, as shown in the equation. 2NaN()2Na()+3N()32ssg

What mass of sodium azide is required to produce 51.8 L of nitrogen gas with a density of 1.25 g/L?

  • A96.2 g
  • B100 g
  • C144 g
  • D75.4 g
  • E66.8 g

Q3:

Saccharin is a compound of carbon, hydrogen, nitrogen, oxygen, and sulfur:

C C H C C H C C H C S O N H O O H

To 2 significant figures, how many molecules of saccharin can be prepared from 30 C atoms, 25 H atoms, 14 N atoms, 12 O atoms, and 8 S atoms?

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