Videos
(a)
Interpretation:
The number of moles of the first product produced needs to be determined if 0.625 mole of the second product forms.
Concept Introduction:
To calculate moles of first product formed, balance the equation representing the reaction then use mol ratios to calculate the unknown moles of the product.
The balanced equation is:
(a)
Answer to Problem 10A
0.469 mole of first product is formed.
Explanation of Solution
The balanced equation is:
From the equation above, first product is O2 while the second product is KOH.
Hence,
The mol ratio of first product to second product is 3:4.
If 0.625 mole of the second product is formed, then number of moles of first product formed is:
0.469 mole of first product is formed.
(b)
Interpretation:
The number of moles of the first product produced if 0.625 mole of the second product forms needs to be determined.
Concept Introduction:
To calculate moles of first product formed, balance the equation representing the reaction then use mol ratios to calculate the unknown moles of the product.
The balanced equation is:
(b)
Answer to Problem 10A
0.938 moleof first product is formed.
Explanation of Solution
The balanced equation is:
From the reaction above, the first product is Se while the second product is H2O.
Hence, mol ratio of Se:H2O is 3:2. Therefore, number of moles of the first product formed is:
(c)
Interpretation:
The number of moles of the first product produced if 0.625 mole of the second product forms needs to be determined.
Concept Introduction:
To calculate moles of first product formed, balance the equation representing the reaction then use mol ratios to calculate the unknown moles of the product.
The balanced equation is:
(c)
Answer to Problem 10A
c) 0.625 moleof first product is formed.
Explanation of Solution
The balanced equation is:
From the equation, the first product is CH3CHO and the second product is H2O.
Mol ratio of the first to the second product is 2:2, which can be simplified into 1:1.
Number of moles of CH3CHO produced equals number of moles of H2O.
Hence, number of moles of first product formed is 0.625 mole.
(d)
Interpretation:
The number of moles of the first product produced if 0.625 mole of the second product forms needs to be determined.
Concept Introduction:
To calculate moles of first product formed, balance the equation representing the reaction then use mol ratios to calculate the unknown moles of the product.
The balanced equation is:
(d)
Answer to Problem 10A
1.250 moleof first product is formed.
Explanation of Solution
The balanced equation is:
From the reaction, Fe is the first product whereas Al2O3 is the second product.
Mol ratio of Fe:Al2O3 is 2:1.
Hence,
Given that 0.625 mole of Al2O3 is formed, number of moles of Fe formed is:
Chapter 9 Solutions
World of Chemistry, 3rd edition
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