Question

250g water and equal volume of alcohol of mass 200g are replaced successively in the same calorimeter and cool from 60oC to 55oC in 130s & 67s respectively.if the water equilvalent of the calorimeter is 10g,then the specific heat of alcohol

Answer 1

Hello dear,

● Answer- 1.21 cal/g/°C

● Explanation-
# Given-
Specific heat of water cw = 1 cal/g/°C
Density of alcohol da = 1×200/250 = 0.8 g/cm^3

# Solution-
Specific heat of alcohol
ca = (cw × ∆T × tw/ta) / (da × e)
ca = 1 × (60-55) × (130/67) / (0.8 × 10)
ca = 1.21 g/cal/°C

Therefore specific heat of alcohol is 1.21 g/cal/°C.

Hope this is useful...