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
its A.
The oxygen atoms in water molecules attract sodium ions.
To determine the answer, let's analyze the process of dissolving table salt (NaCl) in water.
When NaCl dissolves in water, the water molecules surround and separate the Na+ and Cl- ions of the salt. This separation of ions occurs due to the attractive forces between the polar water molecules and the charged ions. The ions become solvated, meaning they are surrounded by water molecules.
Now, let's evaluate the given answer options:
A. The oxygen atoms in water molecules attract sodium ions.
This statement is not entirely correct. The oxygen atoms in water molecules form dipole-dipole interactions with both sodium and chloride ions, but this alone does not fully explain the dissolution process.
B. Each sodium ion is surrounded by chloride ions.
This statement is incorrect. In a solution, the sodium and chloride ions separate from each other and are individually surrounded by water molecules.
C. Each NaCl molecule is surrounded by water molecules.
This statement is incorrect. When NaCl dissolves, it dissociates into separate sodium (Na+) and chloride (Cl-) ions. Each ion is then surrounded by water molecules.
D. Water molecules hydrogen bond with sodium ions and chloride ions.
This statement is more accurate. When NaCl dissolves, water molecules form hydrogen bonds with Na+ and Cl- ions, helping to break the ionic crystal lattice structure of the salt.
Based on the explanations provided, it appears that option D, "Water molecules hydrogen bond with sodium ions and chloride ions," is the most accurate choice for explaining how table salt (NaCl) dissolves in water.
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;