What is used to measure the heat generated or consumed by a substance during a c
ID: 154635 • Letter: W
Question
What is used to measure the heat generated or consumed by a substance during a chemical reaction or physical change?
Calorimeter
Spectrophotometer
Centrifuge
Crucible
1 points
QUESTION 8
Which of the following terms is used for a chemical reaction with a positive change in enthalpy?
Exoteric
Endothermic
Endogenous
Exogenous
1 points
QUESTION 9
Which of the following terms can be used to describe a chemistry reaction with a negative change in enthalpy?
Exogenous
Exoteric
Exothermic
Endogenous
1 points
QUESTION 10
A calorimeter is used to measure the heat released in two reactions. One experiment digests (combusts) 5 g of sugar and the other digests (combusts) 5 grams of fat. After analysis, the experimenter determines that the specific heat capacity of the sugar is lower than that of the fat. Which of the following statements is true?
The reaction of the sugar consumed more heat.
The reaction of the sugar produced more heat.
The reaction of the fat consumed more heat.
The reaction of the fat produced more heat.
Calorimeter
Spectrophotometer
Centrifuge
Crucible
Explanation / Answer
7.calorimeter
It is used to measure the heat associated with the reaction.
8.Endothermic
Positive change in enthalpy is termed as endothermic reaction.
9.exothermic
Negative change in enthalpy is termed as exothermic reaction
10. (d) the reaction of fat produced more heat.
As the specific heat of fat is more it would havr taken more energy to raise the temperature. Since this is combustion reaction it is evident that the substance with more specific haet will produce more heat.
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