215 - Chemistry Questions Answers

Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b).Compound (b) is reacted with HBr to give (c) which is an isomer of (a). When (a) is reacted with sodium metal it gives compound (d), C8H18 which is different from the compound formed when n-butyl bromide is reacted with sodium. Give the structural formula of (a) and write the equations for all the reactions.

 

Asked By: KRISH
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Asked By: PRIYANSHU SINGH
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Asked By: MITUL
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Joshi sir comment

 Joshi sir comment

Constant b is associated to volume correction so its value be less for molecule of smaller volume.

Asked By: MITUL
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What is the driving force for the reaction

F₂ + H₂O -> H₂F₂ + O₂

Is the very low bond energy of F₂?

Asked By: LUFFY
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Considering the electrode potential of hydrogen to be zero, electrode potential of fluorine is +2.87 volt. It implies that fluorine is best oxidising agent, and thus it oxidises oxygen in the given reaction. Besides it low bond energy of fluorine is also a factor for its dissociation and participation in the reaction. 

Sir pls solve
Asked By: KANDUKURI ASHISH
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Amount of DCl = 4 milimole

Amount of NaOD = 8 milimole

After reaction of acid and base 

Amount of NaOD remaining = 4 milimole

Total volume = 100 ml = 0.1 lit

so [OD] =4*10-3/0.1=4*10-2 (1) Given pD = 13.6 so log[D+] =-13.6= 14¯.4 [D+] =2.5*10-14 (2) Now solve

What products will be formed and why? Why would EtMgBr attack on a particular side of cyclic ester?
Asked By: LUFFY
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Why does

Zn + HCl reduce aldehydes and ketones to alcohols while

Zn - Hg amalgam + HCl reduce aldehyde and ketones to alkanes

Asked By: LUFFY
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 H₂+ Pd + C  Reagent ... It reduces a C=C to C-C ... Is this addition syn or anti?

Asked By: LUFFY
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Joshi sir comment

It is syn reagent

It is m-CPBA
Asked By: LUFFY
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mCPBA is a good oxidizing agent for alkenes and ketones. Here both are present, in that case mCPBA attacks on alkene. Alkene on OMe side is more reactive. So make epoxide this side. Remember also that stereo nature is not changed in this reaction means cis be cis and trans be trans. 

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