Sn1 reactions usually proceed with a. equal amounts of inversion and retention at the center undergoing substitution b. slightly more inversion than retention at the center undergoing substitution c. slightly more retention than inversion at the center undergoing substitution d. complete inversion at the center undergoing substitution e. complete retention at the center undergoing substitution

B. slightly more inversion than retention at the center undergoing substitution

Explanation:

SN1 reaction -

In this type of reaction , nucleophilic substitution reaction takes place via formation of an intermediate , carbocation , and thereby giving the substituted product .

In the very first step of the reaction , a stable carbocation is generated , which can have the possibility to give both the products , i.e. , retention , inversion .

But , there is always more of the inversion product rather than retention .

And racemisation is 80 - 95% and the rest 20 - 5% is inversion .

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j