Two reactants, A and B are mixed together and the resulting mixture\'s temperatu
ID: 703487 • Letter: T
Question
Two reactants, A and B are mixed together and the resulting mixture's temperature decreases as the reaction proceeds to produce the products C and D. Is this reaction exothermic or endothermic? Explain. Suppose the balanced chemical reaction for the reaction in question (1) is 2A+3BC+2D If the heat energy absorbed by this reaction is 75 kJ, what is the magnitude heat energy absorbed per mole of reactant B? Does the mass of salt used affect the amount of heat absorbed or released? Explain. List at least three things that should be considered in choosing the "best"'hot pack. Define what you mean by "best."
Explanation / Answer
Ans 1
A and B are mixed together
A + B = C + D
Temperature decreases as the reaction proceeds.
Temperature is decreased because the energy has been absorbed by the reactants to produce the products.
Therefore it is endothermic reaction.
A + B + Energy = C + D
In exothermic energy the temperature increases as the energy is released.
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