Interpretation: The substance with higher specific heat is to be found.
Concept introduction: The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
Mathematically it is represented by
Answer to Problem 70A
The substance B will have higher specific heat.
Explanation of Solution
It is given that the equal mass of A and B absorb equal amount of heat but the temperature of A increases twice as much as the temperature of substance B.
Putting in the values, we get:
Heat absorbed by A= Heat absorbed by B =
mass of A = mass of B =
Heat capacity of A =
Heat capacity of B =
Change in temperature of A =
Change in temperature of B =
Now as equal mass of A and B absorb equal amount of heat, we can write
Thus, specific heat of substance B is higher than specific heat of substance A.
Chapter 17 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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