A 90W immersion heater is used to supply energy for 5 minutes. The energy supplied is used to completely melt 160g of a solid at its melting point. Calculate the specific latent heat of the solid.
-
A.
2.81jg-1 -
B.
6.25Jg-1 -
C.
8.89Jg-1 -
D.
168.75Jg-1 -
E.
5333.33Jg-1
Correct Answer: Option D
Explanation
pt = ml 80
90 x 5 x 60 = 160 x L
L = (frac{27000}{160})
= 168.75Jg-1
= 168.75