Advertisements
Advertisements
Question
Give a reason why water is called a ‘universal solvent’ but, an alkali is not.
Advertisements
Solution
Water is a polar covalent compound. When it comes in contact with any substance it breaks the electrostatic forces holding the molecules of that substance. Thus, the molecules break loose from the substance and hence dissolve in water. Thus, water is called a universal solvent and an alkali is not.
APPEARS IN
RELATED QUESTIONS
Give reason for Table salt becomes moist during rainy season.
Discuss the importance of water as a solvent for our body .
What do you mean by solubility of a solute in a solvent ?
What is the importance of dissolved salts in water?
How is air dissolved in water different from ordinary air?
Explain the terms:
Solvent
State the term: (Do not give examples)
A solution where solvent is a liquid other than water.
Explain why:
The solute cannot be separated from a solution by filtration.
In which of the following substances will there be
Increase in mass
In which of the following substances will there be
No change in mass when they are exposed to air?
Sodium chloride
Iron
Conc. sulphuric acid
Table salt
Sodium carbonate crystals
What is soap? For what is it used?
What is the advantage of a detergent over soap?
Why does the hardness of water render it unfit for use in a boiler.
Give a reason for the following.
Water is a universal solvent.
Sheela, Saima and Ravi have to dissolve maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice cold milk. Sheela managed to get milk at room temperature. Whom do you think would win the game and why?
State whether the following statement is true or false.
Water can be separated from salt by evaporation.
