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Do all aldehydes have a carbonyl carbon bonded to at least two hydrogens?
Wiki User
∙ 10y ago
All aldehydes except one will have a carbonyl carbon bonded to just one hydrogen. The exception is formaldehyde, the simplest aldehyde, which has a carbon double bonded to oxygen and has two bonds to hydrogen.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoNo hydrogen atom is bonded with the carbonal group CHO except formaldehyde. CHO is bonded with the carbon atoms only.
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How are ketons and aldehydes related to each other?
they have the same functional group
How do aldehyde's and ketones differ from alcohol?
Both aldehydes and ketones contain a C=O (carbon double bond oxygen). Ketones have this C=O somewhere in their carbon chain, but not at the start or end of the chain (ie: there are more carbons attached to the carbon containing the double bond oxygen, and no hydrogens bonded to that carbon). Aldehydes have there C=O at the end, or start of the chain, and to maintain the octet rule, there is hydrogen bonded to the oxygen containing carbon (please note that it is a C=O). The functional group of alcohol is OH. This OH is bonded directly to the last (or first) carbon in the chain. The big difference is that the carbon bond oxygen is a single bond and the hydrogen is bonded to the oxygen (not the carbon, as the case of aldehydes).
Optical isomerism in aldehydes and ketones?
The carbonyl group present in aldehydes or ketones itself is optically inactive but if a carbon attached to carbonyl group is asymmetric (attached to four different groups or atoms) then such compound may show to enantiomers as there are two enantiomers of CH3-CHCl-CHO.
Which molecule is propyne?
Propyne is a linear hydrocarbon with 3 carbons and 4 hydrogens. Two of the carbons are triple bonded, the remaining carbon is single bonded to the middle carbon Starting at the single bonded end, you have three hydrogens bonded to the first carbon, which is single bonded to the middle carbon. The middle carbon is triple bonded to the last carbon. The last carbon is also bonded to a hydrogen. H ...\ H-C-C≡C-H .../ H
What is the molecular shape of C2H4?
Think of this as H2C3H2 or HC3H3 As carbon is tetravalent and hydrogen is monovalent there must be either two hydrogens bonded to a carbon that is double bonded to another that is double bonded to the third which has the remaining hydrogens double bonded. Otherwise this must be a hydrogen bonded to a carbon that is triple bonded to another carbon which is single bonded to the third carbon which is bound to three hydrogens.
How are ketons and aldehydes related to each other?
they have the same functional group
How many lone pairs of electrons are in C3H6O?
The answer is 2 since the Oxygen is double bonded with a carbon O=C
In alkanes carbon is bonded to how many other atoms?
Four. A terminal carbon in an alkane is bonded to 3 hydrogens and 1 carbon, while a middle carbon is bonded to 2 hydrogens and 2 carbons.
How do aldehyde's and ketones differ from alcohol?
Both aldehydes and ketones contain a C=O (carbon double bond oxygen). Ketones have this C=O somewhere in their carbon chain, but not at the start or end of the chain (ie: there are more carbons attached to the carbon containing the double bond oxygen, and no hydrogens bonded to that carbon). Aldehydes have there C=O at the end, or start of the chain, and to maintain the octet rule, there is hydrogen bonded to the oxygen containing carbon (please note that it is a C=O). The functional group of alcohol is OH. This OH is bonded directly to the last (or first) carbon in the chain. The big difference is that the carbon bond oxygen is a single bond and the hydrogen is bonded to the oxygen (not the carbon, as the case of aldehydes).
Are monomers and polymers of aldehydes and keytones that have hydroxyl groups attached?
No, monomers and polymers of aldehydes and ketones do not have hydroxyl groups attached. Aldehydes and ketones have a carbonyl group (C=O) attached to at least one carbon atom and do not have any hydroxyl groups (-OH) attached to the carbon chain.
Why are aldehydes more reactive than ketones towards nucleophile?
Aldehydes are less sterically hindered than ketones. Also, aldehydes have fewer electron donating groups (EDG's) which can stabilize an electron-poor area. The extra carbon chain that ketones have that aldehydes do not have are the reason for both of these things. The neighboring carbon to the carbonyl carbon is an EDG and the carbon chain causes steric hindrance.
Optical isomerism in aldehydes and ketones?
The carbonyl group present in aldehydes or ketones itself is optically inactive but if a carbon attached to carbonyl group is asymmetric (attached to four different groups or atoms) then such compound may show to enantiomers as there are two enantiomers of CH3-CHCl-CHO.
Which molecule is propyne?
Propyne is a linear hydrocarbon with 3 carbons and 4 hydrogens. Two of the carbons are triple bonded, the remaining carbon is single bonded to the middle carbon Starting at the single bonded end, you have three hydrogens bonded to the first carbon, which is single bonded to the middle carbon. The middle carbon is triple bonded to the last carbon. The last carbon is also bonded to a hydrogen. H ...\ H-C-C≡C-H .../ H
What is the molecular shape of C2H4?
Think of this as H2C3H2 or HC3H3 As carbon is tetravalent and hydrogen is monovalent there must be either two hydrogens bonded to a carbon that is double bonded to another that is double bonded to the third which has the remaining hydrogens double bonded. Otherwise this must be a hydrogen bonded to a carbon that is triple bonded to another carbon which is single bonded to the third carbon which is bound to three hydrogens.
Why is ketones and aldehydes are called as polar compounds?
aldehydes n ketones contain a carbonyl group in which carbon is attached to an oxygen with a double bond. The carbon is less electronegative than oxygen therefore carbon acts as an electrophile and oxygen acts an a nucleophile. That is carbon is partially positively charged n oxygen is partially negatively charged. Hence aldehydes n ketones are polar compounds
What is a carbonyl esters group?
In the field of organic chemistry a carbonyl group consists of carbon atoms double bonded with some oxygen atoms. However, Carbonyl Esters consists of carbonyl group influenced by different alkyl groups.
Oxygen double bonded to a carbon in the middle of a carbon chain?
A carbon-oxygen group like this is referred to as a carbonyl group by itself. Any molecule that has one bonded into it's main chain is a ketone.
