How many stereoisomers are there for 1,2-dichlorocyclopentane?:
a) 1
b) 2
c) 3
d) 4
answer: "B" (2)??? or: "D" (4)???
How many stereoisomers are possible for: cortisone acetate?:
a) 32
b) 64
c) 128
d) 256
answer: "B" (64)???
How many stereoisomers are possible for Prilosec?:
a) 4
b) 8
c) 16
d) 32
answer: "B" (8)???
Does 1-methylcyclohexene give only one isomer when reacted with Cl_2 / CCl_4 ????
or:
does 4-methylcyclohexene give only one isomer when reacted with Cl_2 / CCl_4 ???
OR...do neither give ONLY ONE isomer????? Pls help!!!!
Do 3-methyl-2-butanol and 3-chloro-2-butanol have multiple stereocenters??
i went with four because of the 2 raised to n rule two stereocenters is 4 stereoisomers i think lol
answer for the first was "3"
For 1,2-dichlorocyclopentane, there are four possible stereoisomers. The chlorine atoms can be arranged in a cis or trans configuration, resulting in two possible isomers. Each of these isomers can further have either a chair or boat conformation, resulting in a total of four possible stereoisomers. Therefore, the answer is option d) 4.
For cortisone acetate, there are 64 possible stereoisomers. Cortisone acetate has 16 stereocenters, each of which can have two possible configurations (R or S). Therefore, the total number of stereoisomers is 2^16, which equals 64. Therefore, the answer is option b) 64.
For Prilosec, there are 8 possible stereoisomers. Prilosec contains a single chiral center, which can have two possible configurations (R or S). Additionally, there are three double bonds that can be either E or Z isomers. Therefore, the total number of stereoisomers is 2 x 2 x 2 = 8. Therefore, the answer is option b) 8.
Neither 1-methylcyclohexene nor 4-methylcyclohexene have stereocenters and, therefore, do not give multiple isomers when reacted with Cl2/CCl4. The reaction will result in the addition of chlorine atoms to the double bond, resulting in a single isomer for each compound.
Both 3-methyl-2-butanol and 3-chloro-2-butanol have a single stereocenter. Therefore, they do have multiple stereocenters.
To answer these questions, let's break them down one by one:
1. How many stereoisomers are there for 1,2-dichlorocyclopentane?
To determine the number of stereoisomers, we need to identify whether the molecule has any chiral centers. Chiral centers are carbon atoms with four different groups attached to them. In this case, 1,2-dichlorocyclopentane does not have any chiral centers, so it does not have any stereoisomers. The correct answer is a) 1.
2. How many stereoisomers are possible for cortisone acetate?
To determine the number of stereoisomers, we need to consider the number of chiral centers in the molecule. Cortisone acetate has multiple chiral centers, and for each chiral center, there are two possible stereoisomers (R and S). Therefore, if there are n chiral centers, there can be 2^n stereoisomers. In the case of cortisone acetate, there are 8 chiral centers, so the correct answer is d) 256.
3. How many stereoisomers are possible for Prilosec?
To answer this question, we need to know the specific compound referred to as Prilosec. Unfortunately, without further information, it is not possible to determine the number of stereoisomers for Prilosec.
4. Does 1-methylcyclohexene or 4-methylcyclohexene give only one isomer when reacted with Cl2/CCl4?
Both 1-methylcyclohexene and 4-methylcyclohexene have a double bond, and when reacted with Cl2/CCl4, they undergo addition reactions. These reactions can result in the formation of multiple stereoisomers, particularly when the double bond is attacked from two different sides. Therefore, neither compound gives only one isomer when reacted with Cl2/CCl4.
5. Do 3-methyl-2-butanol and 3-chloro-2-butanol have multiple stereocenters?
To determine if a compound has multiple stereocenters, we need to identify if it has multiple chiral centers. In the case of 3-methyl-2-butanol and 3-chloro-2-butanol, both compounds have multiple chiral centers. 3-methyl-2-butanol has one chiral center, while 3-chloro-2-butanol has two chiral centers. Therefore, both compounds have multiple stereocenters.