Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
according to reaction,
The of
are
and
respectively. The respective values of their standard entropies are 194.0, 130.0 and
. The values of
Answer the following questions on the basis of above information
Heat change occurring during conversion of 1 kg of |
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a) |
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b) |
|
c) |
|
d) |
|
Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
according to reaction,
The of
are
and
respectively. The respective values of their standard entropies are 194.0, 130.0 and
. The values of
Answer the following questions on the basis of above information
Heat change occurring during conversion of 1 kg of |
|||||||
a) |
|
b) |
|
c) |
|
d) |
|
(a)
(for 1 mol)
For 1 kg
Number of moles
Heat change for 5.81 mol of