How much heat is required to raise the temperature of 86.5g of water from its melting point to its boiling point

Explanation:

Assuming that pressure is equal to

1 atm

, boiling water at its boiling point implies providing it with enough heat to turn it from liquid at

100

∘

C

to vapor at

100

∘

C

.

The amount of heat needed to allow one mole of water to undergo this phase change is called the enthalpy chnge of vaporization,

Δ

H

vap .For water at

100

∘

C

, the enthalpy change of vaporization is equal to

Δ

H

vap

40.66 kJ/mol

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