Concept explainers
Interpretation:
The amount of heat removed from 112 g of nitrogen gas at its boiling point to form liquid nitrogen gas needs to be calculated.
Concept Introduction:
The latent heat of vaporization is defined as the amount of heat required to vaporize 1 g of the substance. The unit is in J/g. For nitrogen gas, the heat of vaporization at its boiling point is 198 J/g.
Thus, the amount of heat required to vaporize 1 g of the nitrogen gas is 198 J.
It is mathematically represented as follows:
Here, m is mass of nitrogen gas and L is latent heat of vaporization.
According to this, the amount of heat released to form liquid nitrogen gas will be same in the magnitude and the sign will be negative that is -198 J.
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