Classify the following substituents according to whether they are electron donors or electron acceptors relative to hydrogen by the resonance and the inductive mechanisms a acceptor d- donor n- no effect 1. C-C N(CH32Inductive effect Resonance effect 2. Inductive effect Resonance effect -O-CCH2CH2CCH2 0: ссњењењенон 3. Inductive effect Resonance effect

Classify the following substituents according to whether they are electron donors or electron acceptors relative to hydrogen by the resonance and the inductive mechanisms.

How many non-equivalent protons are present in CH3CH═CH2?

Find the deltaH for the reaction below, given the following reactions and subsequent deltaH values: N2H4(l) + H2(g) —> 2NH3 (g) N2H4(l) + CH4O(l) —> CH2O (g) + N2(g) + 3H2(g)—— deltaH= -32.8kj N2(g)+ 3H2(g) —> 2NH3 (g)—deltaH=-57.2 kj CH4O(l) —>CH2O(g) + H2(g) —-deltaH= -65 kj SIG FIGS

Calculate delt G for  a.) CH3NH2(aq) + H2O (l) -> CH3NH3+ (aq) + OH-(aq) T= 25C  kp= 4.4x 10-4 b.) Pbl2(s) + Pb2+(aq) +2I-(aq) T= 25C Kp= 8.7x10-9

I. Molecular rearrangementsA) How are 1,2-hydride shifts in carbocation intermediates formed during SN1 or E1-type processes? How are carbocations formed by treating alcohols with water? How can you predict when a hydride shift will occur and how can you show it using arrow-pushing strategies?

How many types of non-equivalent protons are on fluorobenzene?     2     5     4     3     6

Look at the three resonance structures of naphthalene shewn in Section 15-6, and account for the fact that not all carbon—carbon bonds have the same length. The C1-C2 bond is 136 pm long, whereas the C2—C3 bond is 139 pm long.

Calculate ΔSsys° (J/K) for the catalytic hydrogenation of acetylene to ethane: C2H2(g) + H2(g) → C2H4(g)   Substance S° (J/K·mol) C2H2(g) 200.8 H2(g) 130.58 C2H4(g) 219.4

4. What is the order of (i) boiling point; and, (ii) acidity for the following set of hydrogen compounds H₂O; H₂S; H₂Se; H₂Te   a.H-SH < H-SeH < H-TeH < H-OH; H-OH <H -SH < H-SeH < H-TeH b. H-OH <H -SH < H-SeH < H-TeH; H-SH < H-SeH < H-TeH < H-OH c. H-SH < H-SeH < H-TeH < H-OH; H-SH < H-SeH < H-TeH < H-OH d. H-OH <H -SH < H-SeH < H-TeH; H-OH <H -SH < H-SeH < H-TeH   5. What are the bond angles of the lone pairs of in (i) acetone; and, (ii) water? a. 109.5°; 109.5° b. 109.5°; 120° c. 120°; 109.5° d. 120°; 120°