With reference to the following equationN2(g) + 3 H2(g) 2 NH3(g)Heat of reaction = -92 kJ/molWhich statement is correct?92 kJ is the quantity of heat which isQuestion 6Select one:a.lost to the surroundings when 1 mol of hydrogen is consumedb.lost to the surroundings when 1 mol of ammonia is formedc.lost to the surroundings when 2 mol of ammonia are formedd.gained from the surroundings when 1 mol of hydrogen is formede.gained from the surroundings when 2 mol of ammonia are formed
Question
With reference to the following equationN2(g) + 3 H2(g) 2 NH3(g)Heat of reaction = -92 kJ/molWhich statement is correct?92 kJ is the quantity of heat which isQuestion 6Select one:a.lost to the surroundings when 1 mol of hydrogen is consumedb.lost to the surroundings when 1 mol of ammonia is formedc.lost to the surroundings when 2 mol of ammonia are formedd.gained from the surroundings when 1 mol of hydrogen is formede.gained from the surroundings when 2 mol of ammonia are formed
Solution
The correct answer is c. 92 kJ is the quantity of heat which is lost to the surroundings when 2 mol of ammonia are formed.
Here's why:
The heat of reaction, also known as the enthalpy change, is the amount of heat absorbed or released during a chemical reaction. In this case, the heat of reaction is -92 kJ/mol, which means that the reaction releases 92 kJ of heat per mole of reaction.
The balanced chemical equation shows that 2 moles of ammonia (NH3) are produced for each reaction cycle. Therefore, when 2 moles of ammonia are formed, 92 kJ of heat is released (or "lost") to the surroundings.
So, the statement "92 kJ is the quantity of heat which is lost to the surroundings when 2 mol of ammonia are formed" is correct.
Similar Questions
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