For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = – 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be__________________?
2
Hardening of steel is not possible, unless it is heated _________________ critical point ?
3
Strain hardening effect in metals subjected to cold working is due to the _______________ mechanism?
These are just sample questions. The actual quiz contains 15 questions.
