For each question below, please completely fill in the correct bubble on the ans
ID: 1000884 • Letter: F
Question
For each question below, please completely fill in the correct bubble on the answer sheet. In the thermite reaction an explosion occurs that can melt iron. This reaction is... Endergonic and endothermic Endergonic and exothermic Exergonic and endothermic Exergonic and exothermic Not enough information to make any of the above conclusions Submerging an aluminum can full of warm water vapour into an ice bath causes the can (the system) to crush. In this process, what are the signs of work and heat for the system (using the convention delta E = q + w)? w > 0; q > 0 wExplanation / Answer
1) The thermite reaction is an exothermic reaction where the heat is released. This a exergonic reaction, beacause the thermite reaction is spontaneous reaction, in which the delta G is negative.
Answer is D (exergonic and exothermic)
2) Here the work is done on the system. w >0
In this process the system lose the heat from it to the surroundings. q < 0
Answer is C
3) For the given reaction, delta H is the enthalpy when 1 mole of C is formed. It is reversed (- delta H) when 1 mole of C reacts. So here 3 moles of C reacts, the enthalpy is -3 delta H
Answer is D
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