Praktikum Kalorimeter

Summary

This video demonstrates a physics experiment using an adiabatic calorimeter to determine the water equivalent and the specific heat of metals. The process involves weighing the calorimeter, measuring water temperatures, and heating metals to boiling points. The goal is to find the specific heat of metals and the water equivalent of the calorimeter by recording temperature changes and mass before and after the experiments. The video provides step-by-step instructions, showcasing how to perform the experiment accurately while ensuring thermal equilibrium is reached during mixing.

Takeaways

• 😀 The experiment involves using an adiabatic calorimeter to determine the specific heat of water and metals.
• 😀 The tools required for the experiment include an adiabatic calorimeter, thermometer, electric kettle, digital balance, and distilled water.
• 😀 The first part of the experiment focuses on determining the specific heat of water using the adiabatic calorimeter.
• 😀 The calorimeter needs to be weighed when empty before adding distilled water to ensure accurate mass measurements.
• 😀 After filling the calorimeter with water, the temperature is measured and recorded.
• 😀 The water is heated using an electric kettle, and its boiling point is recorded using a thermometer.
• 😀 The heated water is then quickly transferred into the calorimeter, and the temperature is allowed to stabilize.
• 😀 The second part of the experiment determines the specific heat of a metal by repeating similar steps with a metal sample.
• 😀 The metal sample is heated in the electric kettle, then added to the calorimeter, and the temperature is allowed to stabilize.
• 😀 Throughout the experiment, the temperature and mass measurements are carefully recorded to calculate the specific heat of the substances.
• 😀 The results from both parts of the experiment help in determining the specific heat capacities of water and metals, crucial for understanding thermal properties.

Q & A

What is the primary goal of the experiment in the script?

The primary goal of the experiment is to determine the specific heat of water in an adiabatic calorimeter and the specific heat capacity of metals.

What equipment is used to conduct the experiment?

The equipment includes an adiabatic calorimeter, thermometers, digital balance, electric kettle, aquades (distilled water), and metal samples.

How is the empty calorimeter initially measured?

The empty calorimeter is weighed using a digital balance, and its mass is recorded as 353 grams.

What is the purpose of the electric kettle in the experiment?

The electric kettle is used to heat the water to its boiling point, which is then transferred to the calorimeter for thermal equilibrium.

How is the final temperature of the water in the calorimeter determined?

The final temperature is measured after the boiling water is transferred into the calorimeter, and thermal equilibrium is reached, where the temperature no longer rises or falls.

Why is the thermometer used during the heating of water and metal?

The thermometer is used to monitor the temperature of both the boiling water and the metal to ensure the accurate measurement of temperature at various stages of the experiment.

What is the significance of thermal equilibrium in this experiment?

Thermal equilibrium ensures that the temperature of the system stabilizes and that no more heat transfer occurs, allowing for accurate measurement of temperature changes and specific heat calculations.

How is the specific heat of water calculated in the experiment?

The specific heat of water is calculated by using the mass of the water, the initial and final temperatures, and applying the heat transfer equation based on the principle of conservation of energy.

How is the specific heat of a metal determined in the experiment?

The specific heat of a metal is determined by heating the metal to a known temperature, transferring it to the calorimeter with water, and then measuring the final equilibrium temperature, similar to the procedure used for water.

What role does the digital balance play in the experiment?

The digital balance is used to measure the mass of the calorimeter, water, and metal samples to ensure that the quantities used in the experiment are accurate for the calculations of specific heat.