Concept explainers
(a)
Interpretation:
The number of moles and number of grams of
Concept Introduction:
The formula used to determine the number of moles is:
Answer to Problem 5.99P
The number of moles of the product is 1 mole and the number of grams of the product is 46g.
Explanation of Solution
Given that 1.0 mol of NO and 1.0 mol of
It can be observed that 1 mole needs only 0.5 mole of oxygen to complete the reaction. But actually, 1 mole is said to be involved indicating that there is an excess of oxygen. Hence, the limiting reactant is NO.
To compute the number of moles, the following steps are taken
Consider the equation
Hence, the number of moles of the product is 1 mole.
To compute the number of grams, it is known that the molar mass of
Hence, 1 mole = 46.01 g
Therefore, number of grams of
(b)
Interpretation:
The number of moles and number of grams of
Concept Introduction:
The formula used to determine the number of moles is:
Answer to Problem 5.99P
The number of moles of the product is 1 mole and the number of grams of the product is 46 g.
Explanation of Solution
Given that 2.0 mol of NO and 0.5 mol of
For complete reaction, 2 mole of NO requires 1 mole of
But actual condition indicates that 0.5 mole of oxygen is used indicating that there is less moles of oxygen. This indicates that the limiting reactant is
To compute the number of moles, the following steps are taken
Consider the equation
2 moles of NO and 1 mole of oxygen react to give 2 moles of product.
Ratio of reactant is
But for 0.5 mole of
Hence, the number of moles of NO is 1 mole. Therefore, only 1 mole of product is formed
To compute the number of grams, it is known that the molar mass of
Hence, 1 mole = 46.01 g
Therefore, the number of grams of
(c)
Interpretation:
The number of moles and number of grams of
Concept Introduction:
The formula used to determine the number of moles is:
Answer to Problem 5.99P
The number of moles of the product is 0.333 mole and the number of grams of the product is 15.3 g.
Explanation of Solution
Given
the mass of nitric oxide =10g
Molar mass of Nitric oxide =30.01g/mol
The number of moles of NO is computed as
The mass of oxygen =10 g
Molar mass of oxygen =32.0 g/mol
The number of moles of Oxygen is computed as
Hence, no. of moles of NO is 0.333 mole
No. of moles of
For 1 mole of NO to react with oxygen, the number of moles of oxygen necessary is computed as
But previously it is noted that 0.333 mole of NO reacts with 0.313 mole of oxygen instead of 0.167 mole. Hence, it is clearly seen that there is an excess of oxygen involved indicating that NO is the limiting reactant.
To calculate the number of moles of products
Therefore, 0.333 mole of products is formed
To calculate the number of grams of the product
Molar mass of
(d)
Interpretation:
The number of moles and number of grams of
Concept Introduction:
The formula used to determine the number of moles is:
Answer to Problem 5.99P
The number of moles of the product is 0.933 mole and the number of grams of the product is 42.93g.
Explanation of Solution
Given
the mass of nitric oxide =10g
Molar mass of Nitric oxide =30.01g/mol
The number of moles of NO is computed as
the mass of oxygen =10g
Molar mass of oxygen =32.0 g/mol
The number of moles of Oxygen is computed as
Hence, no. of moles of NO is 0.933 mole
No. of moles of
For 1 mole of NO to react with oxygen, the number of moles of oxygen necessary is computed as
But previously it is noted that 0.933 mole of NO reacts with 0.5 mole of oxygen ionstead of 0.467 mole. Hence, it is clearly seen that there is less oxygen involved indicating that oxygen is the limiting reactant.
To calculate the number of moles of products
Therefore, 0.933 mole of products is formed
To calculate the number of grams of the product
Molar mass of
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Chapter 5 Solutions
General, Organic, & Biological Chemistry
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