Answer:
Explanation:
Mol of NaI = 0.405 mol
Molarity of solution = 0.724 M
Molarity is given by
The required volume is .
After recrystallization, the final weight of biphenyl is found to be 0.02 g. Assume that all steps were carried out correctly, n
1 answer:
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Answer:
Both reaction A and reaction B are non spontaneous.
Explanation:
For a spontaneous reaction, change in gibbs free energy () should be negative.
We know, , where T is temperature in Kelvin scale.
Reaction A:
As is positive therefore the reaction is non-spontaneous.
If at a temperature T K , the reaction is spontaneous then-
or,
or,
or,
So at a temperature greater than 350 K, the reaction is spontaneous.
Reaction B:
As is positive therefore the reaction is non-spontaneous.
If at a temperature T K , the reaction is spontaneous then-
or,
or,
or,
So at a temperature greater than -16 K, the reaction is spontaneous.