Wha is the molecular formula ?
1 answer:
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Answer:: -ve
: -ve,
: +ve
Explanation:
Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.
for Endothermic reaction is positive and
for Exothermic reaction is negative.
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
is positive when randomness increases and
is negative when randomness decreases.
As 15 moles of gaseous reactants are changing into 18 moles of gaseous products, randomness is increasing and thus is positive.
Using Gibbs Helmholtz equation:
Thus is negative ,
is positive and
is negative.