Why was it necessary to wash the crude methylcyclohexenes with aqueous sodium bicarbonate

The crude methylcyclohexenes are washed with basic aqueous sodium bicarbonate to neutralize any acid present.

Methylcyclohexene is synthesized from 1-methylcyclohexanol in the presence of acid. The reaction involves the protonation of the 1-methylcyclohexanol which yields water which is a good leaving group. Abstraction of a proton completes the mechanism and methylcyclohexene is formed.

There may be traces of acid present after the synthesis hence the crude methylcyclohexenes are washed with basic aqueous sodium bicarbonate to neutralize any acid present.

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This is used to remove acid impurity.

Explanation:

It is necessary because sodium bicarbonate helps to remove the acid impurities in the mix. It serves the purpose of neutralizing the acid impurity present in the mix with the methylcyclohexene product.

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

can you list the answers so i can answer