What is the main reason salt dissolves in water?
Answer and explanation
Correct answer: Water is a polar solvent
Water molecules are polar: the oxygen end is partially negative and the hydrogen ends are partially positive. These charges attract the oppositely charged ions in an ionic salt, such as sodium and chloride ions, and hydration helps separate and stabilise them in solution. Thus water’s polarity is the relevant reason. Colour, sweetness, and the false claim that salt is a gas do not explain dissolution.
Frequently asked questions
What is the correct answer to this question?
Water is a polar solvent
Why is this the correct answer?
Water molecules are polar: the oxygen end is partially negative and the hydrogen ends are partially positive. These charges attract the oppositely charged ions in an ionic salt, such as sodium and chloride ions, and hydration helps separate and stabilise them in solution. Thus water’s polarity is the relevant reason. Colour, sweetness, and the false claim that salt is a gas do not explain dissolution.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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