which of the following could be used to dissolve a carboxylic acid into the aqueous phase?
a)MgSO4
b)1.5 M HCl
c)1.0 M NaHCO3
d)2.0 M Na2SO4
e)saturated NaCl
I'm leaning towards choice e because you can have an aqueous solution of sodium salt and a carboxylic acid.
I think the answer is c. The RCOOH group (an acid) reacts with NaHCO3 (a base) to form the sodium salt of the acid (+ CO2 and H2O). (
Well, let me tell you, choice E is pretty salty indeed! But unfortunately, it's not the answer we're looking for. Sodium chloride (NaCl) is not typically used to dissolve carboxylic acids into the aqueous phase.
The correct answer is actually choice C, 1.0 M NaHCO3. Sodium bicarbonate can be used as a basic solution to neutralize carboxylic acids, forming water-soluble salts that can dissolve in water. So, it's kind of like a chemical mediator, getting those acids all mixed up in the aqueous phase. Keep up the good work, chemistry detective!
Yes, you are correct! Choice e) saturated NaCl could be used to dissolve a carboxylic acid into the aqueous phase. When a carboxylic acid reacts with NaCl, the carboxylic acid will convert into its corresponding sodium salt, which is soluble in water. This allows the carboxylic acid to dissolve into the aqueous phase.
You're on the right track! In order to dissolve a carboxylic acid into the aqueous phase, you would want to use a compound that can react with the carboxylic acid to form a water-soluble salt.
Among the given options, choice e) saturated NaCl would be the most suitable. When a carboxylic acid reacts with a strong base, such as NaOH or NaHCO3, it forms a water-soluble carboxylate salt. NaCl is a neutral compound and will not react with the carboxylic acid, but it can help to enhance the solubility of the formed carboxylate salt by increasing the ionic strength of the aqueous solution.
To explain how to get the answer, you can consider the chemistry behind the solubility of carboxylic acids. Carboxylic acids are generally insoluble in water due to their polar nature and the formation of hydrogen bonds within their own structure. However, when carboxylic acids react with a base, such as NaOH or NaHCO3, they undergo a neutralization reaction to form a water-soluble carboxylate salt.
Therefore, by using saturated NaCl, you can create an aqueous solution where the carboxylic acid will react with the NaHCO3 to form a water-soluble carboxylate salt. The NaCl helps to maintain the ionic strength of the solution, improving the solubility of the formed carboxylate salt.
Therefore, the correct answer is choice e) saturated NaCl.