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Salt Bridge

Which does no...

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Which does not form double salt? 1. Li2SO4 2. Na2SO4 3. K2SO4 4. Rb2SO4 We know that the hydration enthalpy for Li is greater than it's lattice enthalpy , then why does Li2SO4 does not form a double salt ?

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L i_{2} S O_{4}

does not form double salt like alum. Reason: Li reacts with

N H_{3}

L i N H_{2}

.

L i_{2} S O_{4}

is the only alkali metal salt that does not form double salt."
Answer whether the above statement is true or false.
If true enter 1, else enter 0.

L i_{2} S O_{4}

forms double salts with alum."
Answer whether the above statement is true or false.
If true enter 1, else enter 0.

Q. Which of the following double salt does not exist?

Q. Explain the following:
(i) Gallium has higher ionization enthalpy than aluminum.
(ii) Boron does not exist as

B^{3 +}

ion.
(iii) Aluminum forms

[A l F_{6}]^{3 -}

ion but boron does not form

[B F_{6}]^{3 -}

P b X_{2}

is more stable than

P b X_{4}

P b^{4 +}

acts as an oxidizing agent, but

S n^{2 +}

acts as a reducing agent.
(vi) Electron gain enthalpy of chlorine is more negative as compared to fluorine.
(vii)

T I (N O_{3})_{3}

acts as an oxidizing agent.
(viii) Carbon shows catenation property but lead does not.
(ix)

B F_{3}

does not hydrolyze.
(x) Why does the element silicon, not form a graphite-like structure whereas carbon does?

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