Concept explainers
Interpretation: The number of moles and mass in grams produced of each product in the given reaction needs to be calculated when 20.0 g of each pure hydrazine and pure oxygen are used.
Concept introduction: The ratio of mass of substance to its molar mass is said to be number of moles of that substance.
3
Answer to Problem 57A
The number of moles and mass in grams produced of each product in the given reaction is:
Explanation of Solution
The balanced complete chemical equation for the reaction of hydrazine with oxygen is:
The number of moles of both the reactants are calculated using formula:
The molar mass of
Substituting the values:
From the balanced chemical reaction, the mole ratio of iron and sulfur is 1:1 so, the limiting reactant (the amount of product formed in a chemical reaction is dependent on the reactant known as limiting reactant, which is totally consumed during completion of reaction) is
Now, the mass of each products formed is calculated as:
The molar mass of
Hence, the number of moles and mass in grams produced of each product in the given reaction is:
Chapter 9 Solutions
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