Question

The amount of heat required to raise the temperature of 100g of water through 1degree Celsius is

Answer 1

Solution :

⏭ Given:

✏ Mass of water = 100g

✏ Change in temperature of water = 1°C

⏭ To Find:

✏ Heat required to raise the temperature.

⏭ Concept:

✏ Specific heat capacity is defind as heat requires to raise the temperature (1° C) of one gram substance.

✏ Value of specific heat capacity of water = 1 Cal/g °C

⏭ Formula:

✏ Relation between amount of heat, mass of substance, specific heat capacity and temperature is given by

$\star \: \underline{ \boxed{ \bold{ \sf{ \pink{ \large{Q = mC \triangle{T}}}}}}} \: \star$

⏭ Terms indication:

✏ Q denotes amount of heat

✏ m denotes mass of substance

✏ C denotes specific heat capacity

✏ △T denotes change in temperature

⏭ Calculation:

$\mapsto \sf \: Q = 100 \times 1 \times 1 \\ \\ \mapsto \underline{ \boxed{ \bold{ \sf{ \purple{ \large{Q = 100 \: cal}}}}}} \: \gray{ \bigstar}$

⏭ Additional information:

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