Thermal Properties of Water

The video tutorial by Mrs. Basedin covers heating curve practice problems, focusing on energy calculations for phase changes and temperature changes in water. It includes detailed solutions for converting ice to steam, melting ice, and heating water, emphasizing the use of specific heat, heat of fusion, and heat of vaporization.

What is the heat of vaporization for water in kilojoules per mole?

• 6.02 kJ/mol

• 4.18 kJ/mol

• 2.06 kJ/mol

• 40.7 kJ/mol

How many segments are involved in the heating curve problem from -10°C ice to 150°C steam?

• 6

• 5

• 4

• 3

What is the specific heat of solid water in joules per gram per degree Celsius?

• 2.06

• 1.87

• 4.18

• 3.14

In the second problem, what is the final temperature of the liquid water?

• 100°C

• 25°C

• 150°C

• 0°C

How much energy in kilojoules is required to melt 50 grams of ice?

• 23.8 kJ

• 16.7 kJ

• 5.23 kJ

• 8.35 kJ

What is the heat of fusion for water in kilojoules per mole?

• 4.18 kJ/mol

• 2.06 kJ/mol

• 40.7 kJ/mol

• 6.02 kJ/mol

In the third problem, what is the energy change for converting 25 grams of ice at 0°C to liquid?

• 8.35 kJ

• 16.7 kJ

• 23.8 kJ

• 5.23 kJ

For the temperature change problem, what is the specific heat of liquid water used?

• 3.14

• 1.87

• 2.06

• 4.18

What is the temperature change in the problem involving 12 grams of water from 5°C to 95°C?

• 80°C

• 70°C

• 90°C

• 100°C

In a cooling curve, what is the nature of the process?

• Adiabatic

• Isothermal

• Exothermic

• Endothermic