How many grams of chlorine gas can be produced if 15 grams of FeCl3 reacts with 4 moles of O2? What is the limiting reactant? Wh
1 answer:
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<u>Answer:</u> The value of for the surrounding when given amount of hydrogen gas is reacted is -31.02 J/K
<u>Explanation:</u>
Entropy change is defined as the difference in entropy of all the product and the reactants each multiplied with their respective number of moles.
The equation used to calculate entropy change is of a reaction is:
For the given chemical reaction:
The equation for the entropy change of the above reaction is:
We are given:
Putting values in above equation, we get:
Entropy change of the surrounding = - (Entropy change of the system) = -(14.1) J/K = -14.1 J/K
We are given:
Moles of hydrogen gas reacted = 2.20 moles
By Stoichiometry of the reaction:
When 1 mole of hydrogen gas is reacted, the entropy change of the surrounding will be -14.1 J/K
So, when 2.20 moles of hydrogen gas is reacted, the entropy change of the surrounding will be =
Hence, the value of for the surrounding when given amount of hydrogen gas is reacted is -31.02 J/K
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.