Thermal Properties of Water Lab

The video tutorial guides students through a lab experiment to determine the molar heat of fusion for water. It covers measuring the mass of ice and water, recording initial and final temperatures, and performing calculations to find the molar heat of fusion. The video concludes with a discussion on the results and error analysis.

What is the main objective of the lab experiment discussed in the video?

• To determine the boiling point of water

• To find the molar heat of fusion for water

• To measure the density of ice

• To calculate the specific heat capacity of water

What is the first step in measuring the mass of the ice cube?

• Boiling the water

• Zeroing the scale with the Styrofoam cup

• Measuring the temperature of the ice

• Calculating the volume of the ice cube

Why is the scale preferred over the graduated cylinder for measuring the mass of water?

• The scale is more accurate

• The graduated cylinder is broken

• The scale is faster

• The graduated cylinder is too small

What is the initial temperature of the water before mixing with ice?

• 100°C

• 0°C

• 47.1°C

• 82.7°C

What is the final temperature of the water and ice mixture after the ice has melted?

• 0°C

• 47.1°C

• 100°C

• 82.7°C

What is the formula used to calculate the energy gained by the ice?

• Q = PΔV

• Q = nΔH + mcΔT

• Q = mcΔT

• Q = mL

How is the energy lost by the hot water calculated?

• Using the formula Q = nΔH

• Using the formula Q = PΔV

• Using the formula Q = mL

• Using the formula Q = mcΔT

What is the experimental molar heat of fusion for water obtained in the lab?

• 6.03 KJ/mol

• 7.96 KJ/mol

• 8.66 KJ/mol

• 5.00 KJ/mol

What is the actual molar heat of fusion for water?

• 5.00 KJ/mol

• 8.66 KJ/mol

• 6.03 KJ/mol

• 7.96 KJ/mol

What is the percent error calculated in the experiment?

• 32%

• 50%

• 20%

• 10%