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All bases are soluble in water:
(A) True
(B) False


Answer
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Hint: Solubility of bases depends on many factors such as whether the base is strong or weak or the temperature or the polarity. Generally all strong bases are soluble in water they completely dissociate when added in water.


Complete step by step solution:
Bases are defined as a substance which can neutralize the acid. Bases are generally the oxides or hydroxides or carbonates of metals. The bases which are soluble are known as alkalis. For example NaOH i.e. sodium hydroxide is an alkali because it is soluble in water.
Strong bases are the base which completely ionize in the solution, the value of degree of dissociation for strong bases is 1 and similarly weak bases ionize less than 100 percent and the value of degree of dissociation for weak bases is less than 1.
The solubility of bases depends upon the following factors:
Temperature – the solubility of bases increases with the increase in temperature.
Polarity- like dissolves like means that the compounds dissolve in solvent which have similar polarity.
pH- power of hydrogen or pH of an aqueous solution can affect the solubility of bases. By changing the pH we can change the charge stats of the solute which highly affects the solubility of solute.
And many others, most bases are insoluble in water for example copper oxide is a base but it does not dissolve in water.


Hence, the correct option is (B) false



Note: Soluble bases are known as alkali. It is not important that bases should be soluble in water to term as alkali. The bases which are insoluble are converted to their soluble salt by removing the excess base and reacting with acid. This reaction is known as neutralization reaction.
Acid+basesalt+water


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