00:01
Hello students, in this question, reaction has been occurred between the sodium carbonate and acetic acid.
00:07
We have to find out the sign of del g, del h and del s and we have to predict whether the reaction will be spontaneous or not at higher temperature.
00:16
First of all we are going to write the equation that is na2co3 in the solid state will combine with the acetic acid in the aqueous state and form ch3coona in the aqueous state.
00:30
On balancing this we are going to add 2 before this and 2 before this plus carbon dioxide in the gaseous state plus water in the liquid state.
00:42
First of all coming to the del h sign, here the given reaction is highly an example for the endothermic reaction.
00:52
The endothermic reaction, the heat will be observed by the system or the reaction observes heat and therefore the derivate of the reaction will be positive.
01:08
Coming to the del s calculation, the del s is the degree of randomness and it increases with the increase in the disorderness of the molecule.
01:19
The disorderness of the molecule increases in the following rate, solid will be less than the liquid which is less than the aqueous state, this will be less than the gaseous state.
01:29
So the number of disorderness of the product is greater than the disorderness of the reactant, therefore the randomness of the reaction increases and therefore the entropy also increases.
01:46
Therefore the del s for this reaction will be positive.
01:51
Coming to the del g calculation, we know the relationship between the del g del h and del s which can be given by del h minus t del s...