Question

Estimate the PE (in pk, units) required to break the bonds indicated (from left to right) 16.50 +16+0+16 +16 Which molecule has the best leaving group! Fill in the blanks AND identify the best reasoning An Sy2 reaction is faster in a solvent because such solvents 1 2 [polar protic): stabilize ions (polar protic): lower the PE of an S. 2 transition state ſpolar pronicl: lower the PE of S. 2 starting materials and products) (polar aprobic), stabilize ions (polar aprooc): lower the PE of an 5,2 transition state fpolar aprotic) lower the PE of S2 starting materials (polar aproue): DO NOT lower the PE of S2 starting materials &

Answer 1

solvent which • An SN² gen is faster in a somer the PE of on SN² polas aporstic Transition state. Auss! 6 Best Best remiss group leaving Leaning group is PTS (para toluence sulphonate) ao Highly stable carbocation stabilised by extented Conjugation, Stable Transition state -- - - ºppor opposite side collision is fanamed ✓ since storic repulsion is minimum here. Ans: Ô opposite side - Collision

сиз ou 4 4" rate of axn = [ cu cu o so, cuy] [ou] And orden gumi slate i CM₂ 0-40 WYM stablised by polar 1 aperonment. it plar aprobic . solvent is added in large amont, sale Ea becomes lower & reate of own increases by an undetermined amount .