2. Heat changes during changes of state A. Boiling water (2.5 pts)
Water boils at 100 °C. You boil a pot containing 500 g of water for 10 minutes.
What is the temperature of the water after 10 minutes of constant boiling? (hint this question
does not require any math).
Explain or justify your answer by discussing heat and state change.
B (2.5 pts) Boiling off a pot of water
A pot containing 500 g of water is brought to a boil. The later heat of vaporization is for water H=2260 kJ/kg
How much heat will it take to completely boil the water (turn it all to steam) of water is brought to a boil.

A) it remains at a 100 B) 1130J

Explanation:

A) Water boils at a hundred after which further heat is used up to break bonds in order to allow water to boil rather than being used up to increase the temperature of the water that is boiling.

B) Energy/heat = specific latent heat x mass

E = 2260 x 0.5 (kg)

E = 1130 J

po-215 i got it right on the quiz

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.