Moles= molarity x liter
=0.2500 M x 0.500 L
= 0.1250 mol
mass C2H2O4 . 2H2O = 0.1250 mol x (126.068 g / 1 mol)
=15.76 g
Answer:(3)
Explanation: 2Al+3H2SO4----->Al(2SO4)3+3H2
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1. C
2. A
3. A & B
4. C
5. C
6. A
7. A
8. A & C
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Answer:
The temperature at which the reaction changes from non-spontaneous to spontaneous is 588.735 K
Explanation:
The spontaneity of a reaction is determined by the change in Gibbs Free Energy,
.

If
is greater than zero, then a reaction is feasible.
If
is less than zero, then a reaction is not feasible.
To determine the temperature at which the reaction changes from non-spontaneous to spontaneous, we should equate the
to zero.
We take
as the limiting condition.

Therefore, the temperature is: 588.735K