Specific heat capacity & Latent heat

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What is specific heat capacity?

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Specific heat capacity is the amount of heat required to raise the temperature of 1 kg of a substance by 1°C (or 1 K). It is measured in J kg⁻¹ °C⁻¹.

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What is the formula for calculating heat energy (Q)?

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Q = mcΔT, where Q is the heat energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

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What is latent heat?

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Latent heat is the amount of heat required to change the state of a substance without changing its temperature.

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What is the unit of specific heat capacity?

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The unit of specific heat capacity is J kg⁻¹ K⁻¹.

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How do you calculate the energy released when cooling a substance?

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Energy released (Q) = mcΔT, where m is the mass, c is the specific heat capacity, and ΔT is the change in temperature (final - initial).

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What happens to the temperature of a substance during a phase change?

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During a phase change, the temperature of a substance remains constant while it absorbs or releases heat.

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What is the specific heat capacity of water?

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The specific heat capacity of water is approximately 4200 J kg⁻¹ °C⁻¹.

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What is the significance of the specific heat capacity in thermal management?

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Specific heat capacity is crucial in thermal management as it determines how much energy is needed to change the temperature of materials, affecting heating and cooling processes.

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What is the relationship between heat capacity and specific heat capacity?

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Heat capacity is the total amount of heat required to change the temperature of an object, while specific heat capacity is the heat required per unit mass.

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What is the formula for calculating latent heat?

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Latent heat (L) = Q/m, where Q is the heat absorbed or released and m is the mass of the substance.