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Oxides of Nitrogen

which of the ...

Question

which of the following pairs of nitrates gives the same gaseous products on thermal decomposition?

A

K N O_{3}

and

P b (N O_{3})_{2}

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B

K N O_{3}

and

N a N O_{3}

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C

P b (N O_{3})_{2}

and

C u (N O_{3})_{2}

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D

N a N O_{3}

and

C a (N O_{3})_{2}

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Solution

The correct options are
B $K N O_{3}$ and $N a N O_{3}$
C $P b (N O_{3})_{2}$ and $C u (N O_{3})_{2}$
On heating both $K N O_{3}$ and $N a N O_{3}$ give $O_{2}$ as gaseous product.
$2 K N O_{3} \to 2 K N O_{2} + O_{2}$
$2 N a N O_{3} \to 2 N a N O_{2} + O_{2}$
while $P b (N O_{3})_{2}$ and $C u (N O_{3})_{2}$ give $N O_{2}$ and $O_{2}$ as gaseous products.
$2 P b (N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2}$
$2 C u (N O_{3})_{2} \to 2 C u O + 4 N O_{2} + O_{2}$

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Similar questions

Q. Find the number of nitrates which gives

N O_{2}

gas on heating from the following:

Nitrogen dioxide is released on heating:

[

N H_{4} N O_{3}, K N O_{3}, N a N O_{2}, P b (N O_{3})_{2}, A g N O_{3}

]

6

mol of a mixture containing same number of moles of

N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}

A g N O_{3}

, was heated strongly. Total number of moles of

O_{2} (g)

Q. Which of the following statements are correct?
(a) Decomposition of hydrogen peroxide gives dioxygen
(b) Like hydrogen peroxide, compounds such as

K C l O_{3}

P b {(N O_{3})}_{2}

N a N O_{3}

when heated, liberate dioxygen.
(c) 2- Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide.
(d) Hydrogen peroxide is used for the manufacture of sodium perborate.

4 mol of a mixture containing same number of moles each of $N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}, A g N O_{3}, H g_{2} (N O_{3})_{2} a n d Z n (N O_{3})_{2}$ was heated strongly. Total number of moles of $N O_{2 (g)}$ evolved is___

C r_{2} O_{3}

F e_{2} O_{3}

A l_{2} O_{3}

are isomorphous but

N a N O_{3}

K N O_{3}

are not isomorphous.

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