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How do you find the specific heat capacity of water experiment?
1. Given that the specific heat capacity of the calorimeter ccal is known, the specific heat capacity of water cw can be calculated from the following equation: Electrical energy supplied = energy gained by water + energy gained by calorimeter Q = mwcw + mcalccal .
What is the specific heat capacity of water GCSE?
4,200 Joules per kilogram per degree Celsius
The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.
Why should we stir the water at the end of the experiment before the temperature reading is taken?
Well, so as to prevent hot-spots, and burning on the bottom of the pan. When you do a calorimetric experiment, you have a given mass of water, and you want the temperature rise of this mass to be uniform. So you stir it.
What is the specific heat capacity experiment?
Connect the heater to the power supply and turn it off after ten minutes. After ten minutes the temperature will still rise even though the heater has been turned off and then it will begin to cool. Record the highest temperature that it reaches and calculate the temperature rise during the experiment.
What’s the specific heat capacity of water?
4182 J/kg°C.
The exact value of the specific heat capacity of water is 4182 J/kg°C. Now, water is quite commonly occurring and an important substance in our life. Therefore, there is a special way to identify the total amount of heat energy needed to raise one gram of water by a calorie (one degree Celsius).
What is the independent variable in specific heat capacity experiment?
Variables. Independent Variable: The temperature of the metal block. Dependent Variable: The time over which energy is supplied to the metal block. Control Variables: The mass of the metal block.
What are the possible sources of error in a calorimetry experiment?
The biggest source of error in calorimetry is usually unwanted heat loss to the surroundings. This can be reduced by insulating the sides of the calorimeter and adding a lid.
Does stirring boiling water make it hotter?
Stirring the pot will bring hotter liquid to the surface, resulting if more heat transfer to the air.
What is the most important source of error in these calorimetry experiments?
More reliable results can be obtained by repeating the experiment many times. The biggest source of error in calorimetry is usually unwanted heat loss to the surroundings.
Does specific heat capacity of water change with temperature?
Specific heat capacity often varies with temperature, and is different for each state of matter. Liquid water has one of the highest specific heat capacities among common substances, about 4184 J⋅kg−1⋅K−1 at 20 °C; but that of ice, just below 0 °C, is only 2093 J⋅kg−1⋅K−1.
What is heat capacity of h2o?
The exact value of the specific heat capacity of water is 4182 J/kg°C.
What is the dependent variable in specific heat capacity?
Variables. Independent Variable: The temperature of the metal block. Dependent Variable: The energy supplied to the metal block by heating.
What is the specific heat of water in joules?
Heat capacity. The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C. Some other examples of specific heat capacities are: Material. Specific heat capacity (J/kg/°C) Brick.
What is the specific heat capacity of water?
The water has a mass of 1 kg and the heater supplied 100,000 J, whilst the temperature rose 23°C. The actual value for the specific heat capacity of water is 4,200 J/kg°C. The calculated value does not match exactly but it is in the correct order of magnitude.
How much energy is required to raise the temperature of water?
The amount of energy required to change the temperature of a material depends on the specific heat capacity of the material. The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.
How to investigate the specific heat capacity of a material?
There are different ways to investigate the specific heat capacity of a material. In this specified practical activity, it is important to: record the time accurately measure and observe the change in temperature and then calculate the energy transferred