Which of the following chemicals is insoluble in water?
A. C6H6 {benzene)
B. HCI (hydrochloric acid)
C. NH3 (ammonia)
D. NaHC03 (sodium bicarbonate)
i think its A
And you are right.
While I'm at it let me expand on one of the answers.
HCl is a gas. As a gas it is properly called hydrogen chloride gas. When it is dissolved in water to form an aqueous solution it is called hydrochloric acid and written as HCl(aq).
To determine which of the given chemicals is insoluble in water, we need to understand what it means for a chemical to be insoluble.
Insolubility refers to the inability of a substance to dissolve in a particular solvent, in this case, water. Essentially, if a chemical does not dissolve in water, it is considered insoluble.
To determine the solubility of each chemical, you can consult a solubility chart or conduct a simple experiment by adding each chemical to separate samples of water and observing whether it dissolves or not. However, I can provide you with some general knowledge to make an educated guess:
A. C6H6 (benzene): Benzene is a nonpolar compound composed entirely of carbon and hydrogen atoms. Nonpolar substances like benzene generally do not dissolve well in water, making benzene likely to be insoluble.
B. HCl (hydrochloric acid): Hydrochloric acid readily dissolves in water and forms a strong acid solution. Therefore, hydrochloric acid is considered soluble in water.
C. NH3 (ammonia): Ammonia is a polar compound and can form hydrogen bonds with water molecules. As a result, ammonia is highly soluble in water and is known as a water-soluble compound.
D. NaHCO3 (sodium bicarbonate): Sodium bicarbonate is also soluble in water, meaning it dissolves readily to form a solution.
Based on this information, it can be concluded that the correct answer is A. C6H6 (benzene), as it is the only compound that is insoluble in water.