How do you determine the specific heat capacity?
The specific heat capacity is the heat or energy required to change one unit mass of a substance of a constant volume by 1 °C. The formula is Cv = Q / (ΔT ⨉ m) .
What is the experiment to measure the the specific heat capacity of a liquid?
To determine the specific heat capacity of another liquid, you could pour a measured mass of the hot liquid into the calorimeter (whose heat capacity is now known), and measure the fall in temperature of the liquid and the rise in temperature of the calorimeter, and hence deduce the specific heat capacity of the liquid …
What is the purpose of a specific heat capacity lab?
Often applied to metallic elements, specific heat can be used as a basis for comparing how different substances absorb and transfer energy. To measure specific heat in the laboratory, a calorimeter of some kind must be used. A calorimeter is a well-insulated container that can measure energy changes.
How do you find the specific heat capacity of water?
The specific heat capacity of water is 4.18 J/g/°C. We wish to determine the value of Q – the quantity of heat. To do so, we would use the equation Q = m•C•ΔT. The m and the C are known; the ΔT can be determined from the initial and final temperature.
What is the specific heat capacity?
The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).
How do you determine specific heat experimentally?
Steps to determine the specific heat capacity.
- Place a beaker on a balance and press zero.
- Now add the oil to the beaker and record the mass of the oil.
- Read the starting temperature of the oil.
- Connect a joulemeter to the immersion heater.
- Time for thirty minutes.
How can you improve the accuracy of a specific heat capacity experiment?
We could reduce the error in the experiment by heating the block up by 10 degrees rather than just by 1. This will make our results more accurate. The accuracy of the flashes depends on the power supplied to the Joulemeter.
How could you use an apparatus to determine the specific heat capacity of aluminium?
Answer: Change in energy stored thermally (due to the temperature rise) = mass x specific thermal capacity x temperature rise. The temperature of I kilogram of aluminium rises about four times that of a kilogram of water. The specific thermal capacity of aluminium is 900 J/kg °C.
What is meant by specific heat capacity How will you prove experimentally?
The amount of heat energy required to raise the temperature of a unit mass of an object by 1° C is called the specific heat capacity of that object. To prove experimentally: (i) Take three spheres of iron, copper and lead of equal masses. (ii) Now put all the three spheres in boiling water in the beaker for some time.
How does specific heat of water vary with temperature?
One of water’s most significant properties is that it takes a lot of energy to heat it. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.