Whose solubility increases with increase in temperature?


> 
> Solubility of which among the following substances in **water** increases slightly with rise in temperature?
> 
> 
> (a)$\ce{KBr}$
> 
> 
> (b)$\ce{KCl}$
> 
> 
> (c)$\ce{KNO3}$
> 
> 
> (d)$\ce{NaNO3}$
> 
> 
> 


Answer is (b).


I don't know why.
According to me if temperature is increased then Bonds between any of these four must be broken due to supplied energy & solubility must decrease. And what about the other three. Do they too also show the same trend.




All four substances have higher solubility at higher temperatures in the range from 0 to 100 degrees Celsius.


$\ce{KBr}$ and $\ce{KCl}$ both roughly double their solubility from 0 to 100 degrees Celsius.


To me the question does not make sense.


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