1.

Cautions action of the acid to an anion in cold yields a transient, Pale-blue liquid with the evolution of brown furmes of a gas.Which of the following combination is correct for above statement.

Answer»

(I)(i)(R)
(IV)(iii)(S)
(III)(iv)(Q)
(III)(iv)(R)

Solution :`NO^(2-)+H_2SO_4(dil.)toHNO_2`
`(2HNO_2toN_2O_3+H_2O)`
Translent PALE BLUE liquid
`3HNO_2 to HNO_3 + 2NO+H_2O`
2NO+`O_2tounderset("Reddish BROWN vapour of"NO_2)(2NO_2(uarr))`
`2MnO_4^(-)+5NO_2^(-)+6H^(+)to2Mn^(+2)+3H_2O+5NO_3^(-)`


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