Question

You have been given two glasses of concentrated juice - A and B. Put a few cubes of ice in glass A and cold water at 0 o Celsius in glass B. Which among the two juices will be more cold and why?​

Answer 1

Explanation:

(i) A bottle of soft drink cool faster when surrounded by ice cubes than by ice cold water because 1g of ice at 0

o

C takes 336J of heat energy from the soft drink to melt into water at 0

o

C. Thus the soft drink loses an additional 336J of heat energy for 1g ice at 0

o

C than for 1g ice-cold water at 0

o

C. Therefore cooling produced by 1g ice at 0

o

C is more than that by 1g water at 0

o

C.

(ii) Specific heat capacity =

m⋅ΔT

Q

∵ Specific heat capacity ∝

ΔT

1

where $$ \Delta T$$ is the change in temperature. The specific heat capacity is more for the material which is having more change in temperature.

So material X has a higher specific heat capacity.