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Standard X

Physics

Principle of Calorimetry

Write the exp...

Question

Write the expression for the heat energy Q received by m kg of a substance of specific heat capacity c J k $g^{- 1} K^{- 1}$ when it is heated through $△ t^{\circ} C$ .

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Solution

Heat energy, Q = mc ΔT joules

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Similar questions

The S.I. unit of specific heat capacity is :

(a) J k $g^{- 1}$ (b) J $K^{- 1}$

Q. The specific heat capacity of water is __________

J k g^{- 1} K^{- 1}

Q. Consider the following statements.

1.

Specific heat capacity is the amount of heat required to raise the temperature of

1 k g

of a substance through

1

kelvin.

2.

The SI unit of specific heat capacity is

J k g^{- 1} K^{- 1}

and in CGS it is

c a l g^{- 1}^{\circ} C^{- 1}

3.

Thermal capacity is the amount of heat required to raise the temperature of a given amount of substance through

1

kelvin.
Which of the statements given above are correct?

The amount of heat energy required to convert 1 kg of ice at $- 10^{\circ} C$ to water at $100^{\circ} C$ is 7,77,000 J. Calculate the specific latent heat of ice.

Specific heat capacity of ice = 2100 J $k g^{- 1} K^{- 1}$ , specific heat capacity of water=4200 J k $g^{- 1} K^{- 1}$ .

A mass $m_{1}$ of a substance of specific heat capacity $c_{1}$ at temperature $t_{1}$ is mixed with a mass $m_{2}$ of other substance of specific heat capacity $c_{2}$ at a lower temperature $t_{2}$ .Deduce the expression for the temperature t of the mixture.State the assumption made,if any.

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Principle of Calorimetry

Standard X Physics

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Write the expression for the heat energy Q received by m kg of a substance of specific heat capacity c J kg−1 K−1 when it is heated through △t ∘C.

Heat energy, Q = mc ΔT joules

Write the expression for the heat energy Q received by m kg of a substance of specific heat capacity c J k $g^{- 1} K^{- 1}$ when it is heated through $△ t^{\circ} C$ .