Question

How does table salt (NaCl) dissolve in water?

A. The oxygen atoms in water molecules attract sodium ions.
B. Each sodium ion is surrounded by chloride ions.
C. Each NaCl molecule is surrounded by water molecules.
D. Water molecules hydrogen bond with sodium ions and chloride ions.

I am thinking the answer is A or D? what do you think

Answer 1

I think it's C, but I'm not really sure.
Water is a polar molecule and table salt is ionic. Water and salt are both very polar. When placed in water, NaCl is surrounded first by water molecules and then NaCl dissociates to Na+ and Cl-. They are then attracted to the slightly negative (O) and positive (H) parts of water.
Water does not really form 'hydrogen bond' with Na and Cl. It only forms hydrogen bond with compounds with electronegative atom like N, O or F.

hope that helps? ;u;

Answer 2

I didn't answer this last night because I really didn't like any of the answers. I,like Jai, think the best answer is c. I would have liked it better if the answer for c had been stated as, The NaCl CRYSTAL is surrounded by water molecules. I thought perhaps the fact that NaCl molecules don't really exist (NaCl is really NaxClx) the the word molecule was a trick part of the question.

Answer 3

its A.

Answer 4

The oxygen atoms in water molecules attract sodium ions.