
Concept explainers
(a)
Interpretation:
Need to calculate the dollars needed for the production of 10 tons of aluminum, 30 tons of sodium and 50 tons of calcium.
Concept introduction:
The reduction reaction for the production of aluminum, sodium and calcium was given below
Even though the above reaction shows the production of different metal but all of them involve the reduction by electrons. The quantity of the metal produced is directly proportional to the quantity of the electrons utilized. So the production cost of the metal depends on the number of moles of electron need.
(a)

Answer to Problem 18.48QP
Number of tons of metal produced by one mole of electron was calculated as follows Since the production cost of magnesium was given, the number of tons of magnesium produced by one mole of electrons was calculated first.
For Magnesium
For Aluminum:
Since the production cost of one tone of magnesium was given as 155 dollars it was taken as reference for calculation,
Explanation of Solution
For Magnesium
For Aluminum:
Since the production cost of one tone of magnesium was given as 155 dollars it was taken as reference for calculation,
(b)
Interpretation:
Need to calculate the dollars needed for the production of 10 tons of aluminum, 30 tons of sodium and 50 tons of calcium.
Concept introduction:
The reduction reaction for the production of aluminum, sodium and calcium was given below
Even though the above reaction shows the production of different metal but all of them involve the reduction by electrons. The quantity of the metal produced is directly proportional to the quantity of the electrons utilized. So the production cost of the metal depends on the number of moles of electron need.
(b)

Answer to Problem 18.48QP
Number of tons of metal produced by one mole of electron was calculated as follows Since the production cost of magnesium was given, the number of tons of magnesium produced by one mole of electrons was calculated first.
For Magnesium
For Sodium:
Explanation of Solution
For Sodium:
(c)
Interpretation:
Need to calculate the dollars needed for the production of 10 tons of aluminum, 30 tons of sodium and 50 tons of calcium.
Concept introduction:
The reduction reaction for the production of aluminum, sodium and calcium was given below
Even though the above reaction shows the production of different metal but all of them involve the reduction by electrons. The quantity of the metal produced is directly proportional to the quantity of the electrons utilized. So the production cost of the metal depends on the number of moles of electron need.
(c)

Answer to Problem 18.48QP
Number of tons of metal produced by one mole of electron was calculated as follows Since the production cost of magnesium was given, the number of tons of magnesium produced by one mole of electrons was calculated first.
For Magnesium
For Calcium:
Explanation of Solution
For Calcium:
The quantity of the metal produced is directly proportional to the quantity of the electrons. So the production cost of the metal depends on the number of moles of electron need. Number of tons of metal produce by one mole of electron was calculated first, from this the cost of production of 10 tons of aluminum, 30 tons of sodium and 50 tons of calcium were calculated as
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Chapter 18 Solutions
Chemistry Atoms First, Second Edition
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