Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Answer
Comment
Share
Q)

For the following thermodynamic process Dry ice $\longrightarrow CO_2$ (g)

(a) Both $\Delta H$ and $\Delta S$ are positive
(b) $\Delta H$ is -ve while $\Delta S$ is +ve
(c) $\Delta H$ is +ve while $\Delta S$ is -ve
(d) Both $\Delta H$ and $\Delta S$ are negative

2 Answers

Comment
A)
Answer: Both $\Delta H$ and $\Delta S$ are positive
Dry ice is solid $CO_2$.
$\Delta H$ = +ve, because heat is absorbed during sublimation.
$\Delta S$ = +ve, because entropy of gaseous state is more than solids.
 
Comment
A)
Solution :
$\Delta H$ is positive since it takes up energy as it sublimes.
$\Delta S$ is positive, which can either be explained as an increase in randomness,
Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
...