Concept explainers
(a)
Interpretation:
The heat transferred in the various trials is to be compared.
Concept introduction:
Whenever a hot body comes in contact with cold body, there is transfer of heat from hot body to cold body until temperature of both bodies become equal.
Heat transfer in a process can be calculated by formula:
(a)
Answer to Problem 5E
Heat transferred to sample-I is equal to heat transferred from sample-II.
Explanation of Solution
Trial-I:
Trial-II:
Trial-III:
Trial-IV:
The given table is filled using the above formula:
Sample-I Mass(g) | Sample-I Temperature (°C) | Sample-II Mass(g) | Sample-II Temperature (°C) | Final temperature (°C) | Heat transferred to sample-I (cal) | Heat transferred from sample-II (cal) | |
Trial- I | 100 | 20 | 100 | 80 | 50 | 3000 | 3000 |
Trial- II | 100 | 20 | 100 | 70 | 45 | 2500 | 2500 |
Trial- III | 100 | 20 | 300 | 80 | 65 | 4500 | 4500 |
Trial- IV | 200 | 20 | 100 | 80 | 40 | 4000 | 4000 |
(b)
Interpretation:
The effect of change in temperature on heat transferred in the various trials is to be compared.
Concept introduction:
Whenever a hot body comes in contact with cold body, there is transfer of heat from hot body to cold body until temperature of both bodies become equal.
Heat transfer in a process can be calculated by formula:
(b)
Answer to Problem 5E
Heat transferred to sample-I is more when the change in temperature is more.
Explanation of Solution
Sample-I Mass(g) | Sample-I Temperature (°C) | Sample-II Mass(g) | Sample-II Temperature (°C) | Final temperature (°C) | Heat transferred to sample-I (cal) | Heat transferred from sample-II (cal) | |
Trial- I | 100 | 20 | 100 | 80 | 50 | 3000 | 3000 |
Trial- II | 100 | 20 | 100 | 70 | 45 | 2500 | 2500 |
Trial- III | 100 | 20 | 300 | 80 | 65 | 4500 | 4500 |
Trial- IV | 200 | 20 | 100 | 80 | 40 | 4000 | 4000 |
The table shows heat transfer is maximum in which change temperature is more than rest trials keeping the mass fixed.
(c)
Interpretation:
The effect of mass on heat transferred in the various trials is to be compared.
Concept introduction:
Whenever a hot body comes in contact with cold body, there is transfer of heat from hot body to cold body until temperature of both bodies become equal.
Heat transfer in a process can be calculated by formula:
(c)
Answer to Problem 5E
Heat transferred to sample-I is more when the change in temperature is more.
Explanation of Solution
Sample-I Mass(g) | Sample-I Temperature (°C) | Sample-II Mass(g) | Sample-II Temperature (°C) | Final temperature (°C) | Heat transferred to sample-I (cal) | Heat transferred from sample-II (cal) | |
Trial- I | 100 | 20 | 100 | 80 | 50 | 3000 | 3000 |
Trial- II | 100 | 20 | 100 | 70 | 45 | 2500 | 2500 |
Trial- III | 100 | 20 | 300 | 80 | 65 | 4500 | 4500 |
Trial- IV | 200 | 20 | 100 | 80 | 40 | 4000 | 4000 |
Comparing the trials- I and IV, the table shows heat transfer is maximum in which mass of sample is more than other trial keeping temperature of samples fixed.
Chapter U5 Solutions
Living By Chemistry: First Edition Textbook
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