객관식
Which best explains why water has a high specific heat?
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8. Thermochemistry
Heat Capacity
객관식
Which of the following values is closest to the specific heat capacity of liquid water at standard conditions?
A
2.10 J/g·°C
B
0.90 J/g·°C
C
1.00 J/g·°C
D
4.18 J/g·°C
검증된 단계별 안내1
Understand that the specific heat capacity (c) is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius (°C). It is usually expressed in units of J/g·°C.
Recall that water has a relatively high specific heat capacity compared to many other substances, which means it can absorb a lot of heat without a large change in temperature.
Recognize that the commonly accepted value for the specific heat capacity of liquid water at standard conditions (room temperature and atmospheric pressure) is approximately 4.18 J/g·°C.
Compare the given options (2.10, 0.90, 1.00 J/g·°C) to the known value of 4.18 J/g·°C and identify which is closest to this standard value.
Conclude that the value 4.18 J/g·°C is the correct specific heat capacity of liquid water at standard conditions, as it matches the well-established scientific data.
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