The specific latent heat of vapourization of lead is 8.7 × \(10^5 Jkg_1\). This means
PHYSICS
WAEC 2023
The specific latent heat of vapourization of lead is 8.7 × \(10^5 Jkg_1\). This means that 8.7 × \(10^5\) J of thermal energy is required to change
- A. a given mass of molten lead to vapour at constant temperature and pressure.
- B. 1 kg of molten lead to vapour at constant temperature and pressure.
- C. 1 kg of solid lead to vapour at constant temperature and pressure.
- D. 1 kg of molten lead to vapour for every degree rise in temperature.
Correct Answer: B. 1 kg of molten lead to vapour at constant temperature and pressure.
Explanation
The specific latent heat of vaporization of lead is the amount of thermal energy required to change 1 kg of molten lead to vapor at constant temperature and pressure.
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