(a) Given the stretching frequencies for the C—H bonds shown in color, arrange the corresponding bonds in order of increasing strength. Explain your reasoning.

(b) If the bond dissociation energy of the = C—H bond is 558 kJ mol^–1 (133 kcal mol^–1), use the stretching frequencies in part (a) to estimate the bond dissociation energy of the C—H bond in RCH₂—H.

Transcribed Image Text:

H T RCH=CH 3080 cm-¹ H RCH₂ 2850 cm-1 RC=C-H 3300 cm-¹