The number of optical isomers exhibited by the iron complex (A) obtained from the following reaction — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

2C(graphite) + 2H2(g)  C2H4(g) HF = ? 2C(graphite) + 2H–H(g) 2C(g) + 4H(g) C C H H H H Hreaction = 2Hsub = 2EH–H – 4EC–H –EC=C   = 2 × 710 + 2 × 436 – 4 × 414 – 611  = 25 kJ/mole