Question

Give scientific reasons for the following
Sugar disappears when it is added to water and the water is stirred .

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Answer 1

Answer:

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Answer 2

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Statement :- Sugar disappears when it is added to water and the water is stirred .

Test :- We have to prove the disappearence of sugar on stirring.

Take three types of sugar :-

• Simple kitchen sugar

• Liquid sucrose drop

• Rock sugar

Lets , start stirring in presence of water .

▶ Simple kitchen sugar

➝ Take a little amount of water in beaker & add some sugar to it . It gets disappears but took llittile time & more time to stir . The stirring makes kinetic energy & it disapears sugar .

C6H12O6(s) + H2O ➝ C6H12O6(aq)

It does not have any change in chemical state it only changes the physical state of sugar.

▶Liquid sucrose drop

It readily dissolved in water molecules without much stirring . It undergoes no change.

C6H12O6(aq) + H2O ➝ C6H12O6(aq)

▶ Rock sugar

It harder to disappear beacuse of its big molecular compound . We have to increase temprature for the dissapearence here.

C6H12O6(s) + H2O ----Heat---➝ C6H12O6(aq)

Reason :-

The solublity is based on the nature of solute & solution.

Conclusion :-

Sugar disappears when it is added to water and the water is stirred due to solublity . Solublity states that the tendency of solute to dissolve in a solvent to gives a saturated solution.

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