ACS ORGANIC CHEMISTRY FINAL EXAM 2026/2027
QUESTIONS AND VERIFIED ANSWERS | NEW UPDATE |
GRADED A+.
What will adding CHBr3 and KOH to an alkene do?
What is the formula used to determine number of stereoisomers in a compound?
2^n
How to determine stereogenic centers in a molecule?
Whenever a compound is bound to 4 different groups! PLEASE don't forget to
check every group!
Which kinds of diols can HIO4 cleave? What does it form?
-It only cleaves 1/2 diols that are cis with respect to each other
-It forms either an aldehyde or a ketone
,How can you create a carboxylic acid from an alkene?
Use KMnO4, acid, and heat; This will cleave the double bond; an aldehyde will be
reduced to a carboxylic acid; a secondary double bond will form a ketone -
Ozonolozysis will cleave it until the aldehyde; KMno4 will cleave it until the
carboxylic acid
Tertiary alcohols are highly resistant to what?
Oxidation
What does NaNH2 do with a terminal alkyne?
Deprotonate the terminal alkyne
Williamson ether synthesis
Pinnacle rearrangement rxn
,In chair conformations, what is up and what is down?
Up is wedge; down is dash
What will happen with ethers and alcohols in strong acid?
They will be protonated to become good leaving groups and will be replaced by Br
atom
What does H2 and Pd/C reduce?
It reduces a C=C faster than a C=O bond; adds two Hs across the double bond
What only reduces a C=O bond but not a C=C bond?
NaBH4 and LAH
Are combustion rxns endo or exo?
Exothermic
, What is the IHD (index of hydrogen deficiency?
IHD = 2n+2-H all divided by 2; if N decrease number of H by 1; if halogen
increase number of H by 1; make no changes for O
What happens when you take a ketone and you react it with H2 gas and Raney
Nickel?
An alcohol will be formed
What is hydrogenation?
Add H2 and Pd/C; add H2
Functional group: alkane
QUESTIONS AND VERIFIED ANSWERS | NEW UPDATE |
GRADED A+.
What will adding CHBr3 and KOH to an alkene do?
What is the formula used to determine number of stereoisomers in a compound?
2^n
How to determine stereogenic centers in a molecule?
Whenever a compound is bound to 4 different groups! PLEASE don't forget to
check every group!
Which kinds of diols can HIO4 cleave? What does it form?
-It only cleaves 1/2 diols that are cis with respect to each other
-It forms either an aldehyde or a ketone
,How can you create a carboxylic acid from an alkene?
Use KMnO4, acid, and heat; This will cleave the double bond; an aldehyde will be
reduced to a carboxylic acid; a secondary double bond will form a ketone -
Ozonolozysis will cleave it until the aldehyde; KMno4 will cleave it until the
carboxylic acid
Tertiary alcohols are highly resistant to what?
Oxidation
What does NaNH2 do with a terminal alkyne?
Deprotonate the terminal alkyne
Williamson ether synthesis
Pinnacle rearrangement rxn
,In chair conformations, what is up and what is down?
Up is wedge; down is dash
What will happen with ethers and alcohols in strong acid?
They will be protonated to become good leaving groups and will be replaced by Br
atom
What does H2 and Pd/C reduce?
It reduces a C=C faster than a C=O bond; adds two Hs across the double bond
What only reduces a C=O bond but not a C=C bond?
NaBH4 and LAH
Are combustion rxns endo or exo?
Exothermic
, What is the IHD (index of hydrogen deficiency?
IHD = 2n+2-H all divided by 2; if N decrease number of H by 1; if halogen
increase number of H by 1; make no changes for O
What happens when you take a ketone and you react it with H2 gas and Raney
Nickel?
An alcohol will be formed
What is hydrogenation?
Add H2 and Pd/C; add H2
Functional group: alkane
