Which is most stable.?A ph3c+ B ph2c+h

#A)# #"Ph"_3"C"^(+)#
#B)# #"Ph"_2"CH"^(+)#

1 Answer
anor277
Jun 30, 2018

Would it not be #A#?

Explanation:

And so how do we find actual data with which to assess the relative stabilities. Now one way MIGHT be to examine the #pK_a# values of #Ph_3CH#, and #Ph_2CH_2#

For #Ph_3CH rarr Ph_3C^(+) + H^+#...#pK_a=31#, according to this site.

And for #Ph_2CH_2 rarr Ph_2C^(+) + H^+#...#pK_a=33.5#, according to the same site.

And so that is two orders of magnitude... Which cation is more stable?

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