Calorimetry
Chemistry ⇒ Thermochemistry and Energetics
Calorimetry starts at 10 and continues till grade 12.
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See sample questions for grade 10
A 10 g sample of ice at 0°C is added to 100 g of water at 30°C. What is the final temperature of the mixture? (Latent heat of fusion of ice = 334 J/g, specific heat of water = 4.18 J/g°C)
A 150 g sample of a metal at 80°C is placed in 100 g of water at 20°C. The final temperature is 25°C. If the specific heat capacity of water is 4.18 J/g°C, calculate the specific heat capacity of the metal.
A 200 g sample of water is cooled from 80°C to 30°C. How much heat is lost by the water? (Specific heat capacity of water = 4.18 J/g°C)
A 250 g solution absorbs 5000 J of heat, causing its temperature to rise by 10°C. What is the specific heat capacity of the solution?
A 50 g metal block at 100°C is placed in 100 g of water at 20°C. The final temperature is 22°C. If the specific heat capacity of water is 4.18 J/g°C, calculate the heat gained by the water.
A calorimeter contains 200 g of water at 25°C. If 10 g of steam at 100°C is condensed into the water, calculate the final temperature of the mixture. (Assume no heat loss to surroundings. Latent heat of vaporization of water = 2260 J/g, specific heat of water = 4.18 J/g°C.)
A student mixes 50 mL of 1 M HCl with 50 mL of 1 M NaOH in a coffee cup calorimeter. The temperature rises from 22°C to 28°C. If the specific heat capacity of the solution is 4.18 J/g°C and the density is 1 g/mL, calculate the heat released.
Describe one real-life application of calorimetry outside the laboratory.
Describe the main difference between a bomb calorimeter and a coffee cup calorimeter.
Describe the principle of conservation of energy as it applies to calorimetry.
Explain why a bomb calorimeter is considered a constant volume device.
Explain why it is important to stir the contents of a calorimeter during an experiment.
Explain why water is often used as a coolant in engines.
If 100 g of water is heated from 25°C to 35°C, and the specific heat capacity of water is 4.18 J/g°C, how much heat is absorbed?
State the formula used to calculate the heat absorbed or released by a substance.
What is calorimetry?
What is the main purpose of using a lid on a coffee cup calorimeter?
