Question

How much heat is required to increase the temperature of 0.5 kg of water from 10 degree C to 65 degree C?

Answer 1

Given :

Mass of the water = 0.5 kg

Initial temperature = 10°C

Final temperature = 65°C

To Find :

Heat required to increase the temperature.

Solution :

❖ Specific heat capacity is defined as the heat required to increase temperature of 1 g substance by 1 °C$.$

Mathematically, Q = m c ∆T

» Q denotes heat

» m denotes mass

» c denotes specific heat capacity

» ∆T denotes change in temperature

Specific heat capacity of water = 1 cal / g °C

By substituting the given values;

➙ Q = m c ∆T

➙ Q = 0.5 × 1 × (65 - 10)

➙ Q = 0.5 × 55

➙ Q = 27.5 cal

Knowledge BoosteR :

• Specific heat capacity of water is very high. This is the reason why water is used as a coolant in automobile radiators as well as a heater in hot water bags.
• Determination of specific heat or latent heat of a substance using principle of calorimetry is good enough provided there is no loss of heat.

Answer 2

Answer:

Given :

Mass of the water = 0.5 kg

Initial temperature = 10°C

Final temperature = 65°C

To Find :

Heat required to increase the temperature.

Solution :

❖ Specific heat capacity is defined as the heat required to increase temperature of 1 g substance by 1 °C..

Mathematically, Q = m c ∆T

» Q denotes heat

» m denotes mass

» c denotes specific heat capacity

» ∆T denotes change in temperature

Specific heat capacity of water = 1 cal / g °C

By substituting the given values;

➙ Q = m c ∆T

➙ Q = 0.5 × 1 × (65 - 10)

➙ Q = 0.5 × 55

➙ Q = 27.5 cal

Knowledge BoosteR :

Specific heat capacity of water is very high. This is the reason why water is used as a coolant in automobile radiators as well as a heater in hot water bags.

Determination of specific heat or latent heat of a substance using principle of calorimetry is good enough provided there is no loss of heat.