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Preparation and Properties and Uses of Potassium Hydroxide

Which of the ...

Question

Which of the following ions forms highly soluble hydroxide in water :

K^{+}

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Z n^{+ 3}

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A l^{+ 3}

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C a^{+ 2}

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C u^{+ 2}

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Solution

The correct option is A $K^{+}$
$K^{+}$ is the most soluble hydroxide in water among the given ions ,because as the size and charge is less the hydroxide will be more soluble.
Hence option A is correct.

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Similar questions

Which of the following sets contain only isoelectronic ions?
(i) $Z n^{2 +}, C a^{2 +}, G a^{3 +}, A l^{3 +}$

(ii) $K^{+}, C a^{2 +}, S c^{3 +}, C l^{-}$

(iii) $P^{3 -}, S^{2 -}, C l^{-}, K^{+}$

(iv) $T i^{4 +}, A r, C r^{3 +}, v^{5 +}$

L i

K

C a

N a

M g

A l

Z n

F e

P b

C u

H g

A g

I

Z n (s) + C u {({N O}_{3})}_{2} (a q) \to C u (s) + Z n {({N O}_{3})}_{2} (a q)

I I

N H_{4} C l

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