Question

A 100 g of aluminium requried 4485 J to rase its temperature from 20oC to 70oC. find the specific heat of aluminium?

Answer 1

The heat required to raise the temperature of a substance is described by the following equation:

$Q=mCp\Delta T$

Where,

Q is the heat required to raise the temperature, 4485 J

m is the mass of the substance, 100g

Cp is the specific heat

deltaT is the temperature difference

We must clear the specific heat from the equation and substitute the known values.

$\begin{gathered} Cp=\frac{Q}{m\Delta T} \\ Cp=\frac{4485J}{100g\times(70\degree C-20\degree C)}=0.897\frac{J}{g.\degree C} \end{gathered}$

The specific heat of aluminium will be 0.897J/g.°C