You have developed a promising anti-cancer agent, but it has poor solubility in water. Which of the following changes should imp
rove water solubility? ( there is two possible answers)a) adding a methyl groupb) adding a hydroxyl groupc) adding a carboxyl groupd) increasing the size of the druge) adding a benzene ring
The addition of a hydroxyl or a carboxyl group to the molecule will increase its solubility. This is because, the -OH group will form hydrogen bonds with the water molecules. The formation of such hydrogen bonds will lead to improvement in the solubility of the anti cancer agent and solve the problem of poor solubility of the anticancer agent in water.
The question requires us to use the dilution formula , where and are the stock concentration and volume respectively, then and are the dilute concentration and volume respectively.
a. = 1.5 M KCI, =0.20M KCl, =250ml KCl
b.
To prepare the solution 33.3ml of 1.5M KCl is diluted to a total final volume of 250ml.