One mole each of CaC2, Al4C3 and Mg2C3 react with H2O in separate open – InterviewSolution

1.	One mole each of CaC2, Al4C3 and Mg2C3 react with H2O in separate open flasks at 25oC. Numerical value of the work done by the system is in the order: Given reactions: CaC2(s)+2H2O(l)→Ca(OH)2(s)+C2H2(g) Al4C3(s)+12H2O(l)→4Al(OH)3(s)+3CH4(g) Mg2C3(s)+4H2O(l)→2Mg(OH)2(s)+CH3−C≡CH(g)
Answer» One mole each of $C a C_{2}, A l_{4} C_{3} a n d M g_{2} C_{3}$ react with $H_{2} O$ in separate open flasks at $25^{o} C .$ Numerical value of the work done by the system is in the order: Given reactions: $C a C_{2} (s) + 2 H_{2} O (l) \to C a (O H)_{2} (s) + C_{2} H_{2} (g)$ $A l_{4} C_{3} (s) + 12 H_{2} O (l) \to 4 A l (O H)_{3} (s) + 3 C H_{4} (g)$ $M g_{2} C_{3} (s) + 4 H_{2} O (l) \to 2 M g (O H)_{2} (s) + C H_{3} - C \equiv C H (g)$

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