Specific Heat of Solids
Item Code : SK051
Principle and Working:
The specific heat capacity of copper, glass and lead are determined by heating the material in a steam chamber and then transferring the heated material into a weighed amount of water in a dewar vessel and measuring the temperature.
In the present setup, the system consists of mixing a given mass m1 of a hot metal specimen with specific heat c1 at temperature T1 and a known mass m2 of water with specific heat c2 at a lower temperature T2 contained in a calorimeter of mass m3with specific heat c3 also initially at temperature T2. Once again we assume the system to be thermally insulated from the surroundings, and the heat capacity of the thermometer, which records the temperature, can be neglected. Let the final temperature of the mixture be Tf . Energy conservation gives:
Qlost(Metal) = Qgained(Water) + Qgained(Calorimeter)
m1c1(T1 – Tf) =m2c2(Tf -T2) +m3c3(Tf-T2) which,
yields the unknown specific heat c1 of the metal specimen as
c1 = (m2c2 +m3c3)( Tf -T2)/m1(T1 -Tf)
- High insulation dewar flask with heat capacity of almost zero.
- Digital Weighing scales with maximum capacity of 700gm.
- PT-100 based digital thermometer with accuracy of 0.1 degree Celsius.
- Different samples Like Copper and Lead supplied with experiment.
- To determine the specific heat capacity of solids (Copper and lead).
- Digital thermometer : Pt-100, Range -50 to +199.9 C, Resolution 0.1 C, Accuracy ± 0.2 C ± 1 digit, Battery 9V.
- Dewar Flask : 350ml portable, 100% rust free, vacuum insulated, designed for hot & cold, copper coating provides heat retention.
- Samples : Copper and Lead, 100gm each.
- Steam chamber : Capacity 1.5 ltr, water level indicator
- Hot Plate : 200 mm base, heating rate knob, heating control knob, overload protection.
| S.No. | Item Name | SK051 |
|---|---|---|
| 1 | Base Assembly | 1 |
| 2 | Steam Chamber Assembly | 1 |
| 3 | Flask with Stirrer | 1 |
| 4 | Copper Shots with Bottle | 1 |
| 5 | Lead Shots with Bottle | 1 |
| 6 | Weighing Scale | 1 |
| 7 | Adaptor 6 V | 1 |
| 8 | MS Rod L-500mm | 1 |
| 9 | Silicon Tube (1.5 m) | 1 |
| 10 | Rubber Stopper | 1 |
| 11 | Digital Thermometer – Model TTX483A | 1 |
| 12 | Beaker 250ml | 1 |
| 13 | Stirrer | 1 |
| 14 | Steam Generator with Water Level Indicator | 1 |
| 15 | Hot Plate Dia. 200mm | 1 |
| 16 | Three Finger Clamp | 1 |
| 17 | Boss Head Square | 1 |
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