AP Chemistry / Unit 6: Thermochemistry
6.4 Heat Capacity and Calorimetry
Notes
$$q=mc\Delta T$$
- $c$ for water is 4.18 J/(g·°C).
- In a calorimeter, $q_{reaction}=-q_{solution}$.
Practice
Heat needed to warm 100 g of water by 10 °C:
$100(4.18)(10)$.
A reaction in water raises its temperature. $q_{reaction}$ is:
Heat goes into the water.
Substances with high specific heat:
Need more energy per degree.
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