Which one of the following is most soluble in water?*1 pointNaClCH4CCl4CO2

The solubility of a substance in water depends on whether or not it can form hydrogen bonds with the water molecules. Here is a step-by-step analysis of each option:

1. NaCl (Sodium Chloride): This is an ionic compound and it is highly soluble in water. The positive sodium ions are attracted to the negative oxygen atoms in the water molecules, and the negative chloride ions are attracted to the positive hydrogen atoms in the water molecules. This allows the NaCl to dissolve in water.

2. CH4 (Methane): This is a nonpolar molecule. It does not have any positive or negative charges, so it cannot form hydrogen bonds with water. Therefore, it is not very soluble in water.

3. CCl4 (Carbon Tetrachloride): This is also a nonpolar molecule. Like methane, it cannot form hydrogen bonds with water, so it is not very soluble in water.

4. CO2 (Carbon Dioxide): This is a polar molecule, so it can form some hydrogen bonds with water. However, it is not as soluble in water as ionic compounds like NaCl.

So, out of these four options, NaCl is the most soluble in water.