Question

it was observed that heat is involved when 25 g of sodium hydroxide is dissolved in 100 ml of pure water . do think there will any change in mass of the solution .find the mass percentage of the solution

Answer 1

Explanation:

More reliable results can be obtained by repeating the experiment many times. The biggest source of error in calorimetry is usually unwanted heat loss to the surroundings. This can be reduced by insulating the sides of the calorimeter and adding a lid.