Chapter 1
the chemical formula of methylamine is CH3NH2. How many unshared electron pairs are associated with a molecule of methylamine?
1
the chemical formula of hydrogen cyanide is HCN. How many valance electrons are associated with a molecule of hydrogen cyanide?
10
the chemical formula of methylamine is CH3NH2. How many valence electrons are associated with a molecule of methylamine?
14
if the bond angles at a carbon are 180, how many groups are distributed around the carbon atom?
2
the chemical formula of hydrogen cyanide is HCN. How many unshared electrons are associated with a molecule of hydrogen cyanide?
2
what is the minimum number of hydrogen atoms present in a carboxylic acid?
2
Coumpounds known as alpha-hydroxycarboxylic acids are found in many cosmetics. These compounds contain both a hydroxyl group and a carboxyl group. What is the minimum number of oxygen atoms present in an alpha-hydroxycobxylic acid?
3
if the bond angles at a carbon atom are 120, how many groups are distributed around the carbon atom?
3
if the bond angles at a carbon atom are 109.5, how many groups are distributed around the carbon atom?
4
amino acids are molecules which contain both an amino group and a carboxyl group. Which atomic species must be present in all amino acids?
C, H, N and O
which of the following is an example of a carboxylic ester?
CH3COOCH3
which of the following is an example of a carboxylic acid?
CH3COOH
in which of the following classes of organic compounds is an oxygen atom bonded to a hydrogen atom?
alcohols
which of the following classes of organic compounds can be categorized as primary, secondary or tertiary?
alcohols
Which of the following is anexample of a primary amine?
all of these
which of the following classes of organic compounds can be categorized as primary, secondary or tertiary?
amines
in which of the following classes of organic compounds must there be at least two oxygen atoms?
both carboxylic acids and esters
which of the following functional groups can be thought of as a combination of two functional groups on a single carbon?
carboxyl
the -COOH group is the functional group of which of the following types of compounds?
carboxylic acid
in which of the following classes of organic compounds is an oxygen atom bonded to a hydrogen atom?
carboxylic acids
in which of the following classes of organic compounds must there be at least two oxygen atoms?
carboxylic acids
amino acids are molecules which contains both an amino groups and a carboxyl group. proteins are made up of a alpha-amino acids which, except for proline, have the general formula NH2-CHR-COOH where the R group determines the identity of the amino acid. Which of the following is true of the amino group in alpha-amino acids?
it is always primary
in which of the following classes of organic compounds must every compound contain more than one carbon atom?
ketones
in organic compounds which of the following elements normally forms three covalent bonds?
nitrogen
Which of the following is an example of a secondary alcohol?
none of these
Which of the following is an example of a secondary amine?
none of these
Which of the following is an example of a tertiary alcohol?
none of these
which of the following is an example of a tertiary amine?
none of these
in organic compounds which of the following elements normally form two covalent bonds?
oxygen
which of the following geometries is never associated with a carbon atom in an organic compound?
square planar
Which of the following is generally true of most organic compounds?
the react slowly
