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Standard XII

Chemistry

Heat Capacity

The thermal c...

Question

The thermal capacity of $40 g$ of aluminium (specific heat = $0.2 c a l g^{- 1}^{\circ} C^{- 1}$ ) is :

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

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

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

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

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Solution

The correct option is C $8 c a l^{\circ} C^{- 1}$
As we know that thermal capacity is given as $Q = m s$
so $Q = 40 \times 0.2 c a l /^{o} C$

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Similar questions

Q. Thermal capacity of

40 g

of aluminum (specific heat

= 0.2 c a l /^{\circ} C

) is?

Q. The thermal capacity of

100 g

of aluminum (specific heat

= 0.2 {cal/g}^{\circ} C)

40 g of water at 60°C is poured into a vessel containing 50 g of water at 20°C. The final temperature recorded is 30°C. The thermal capacity of the vessel is: [Take specific heat capacity of water as 4.2J g^{-1 o}C^-1]

A piece of iron of mass 2.0 kg has a thermal capacity of 966 J $C^{- 1}$ . Its specific heat capacity in SI units is:

Q. A metallic calorimeter of mass 100g contains 200 g of ice and the initial temperature of the calorimeter and the ice is

- 10^{\circ} C

. Heat is supplied to the system containing calorimeter and ice at a constant rate of

50 c a l s^{- 1}

. Find the time required to raise the temperature of the system to

50^{\circ} C

. [Neglect the loss of heat to the surroundings].

Take specific heat capacity of calorimeter and ice as

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

and

\frac{1}{2} c a l g^{- 1}^{\circ} C^{- 1}

.Take latent heat of fusion of ice as

80 c a l g^{- 1}

and specific heat capacity of water as

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

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The thermal capacity of 40 g of aluminium (specific heat = 0.2 calg−1∘C−1) is :

The correct option is C 8 cal∘C−1As we know that thermal capacity is given as Q=msso Q=40×0.2 cal/oC

The thermal capacity of $40 g$ of aluminium (specific heat = $0.2 c a l g^{- 1}^{\circ} C^{- 1}$ ) is :

The correct option is C $8 c a l^{\circ} C^{- 1}$
As we know that thermal capacity is given as $Q = m s$
so $Q = 40 \times 0.2 c a l /^{o} C$