Question

(a) Match the following compounds with the descriptions given below:
(one description for one compound)
[column A]
Hg(NO3)2
Ca(NO3)2
NH,NO3
NaNO3
AgNO3
[column b]
(i) It decomposes to produce two neutral oxides.
(ii) It leaves a black residue when heated.
(iii) It decomposes when exposed to light to leave the corresponding metal as a residue.
(iv) It produces a white precipitate when treated with a solution of sodium hydroxide. (v) It fuses with the test tube when heated and liberates a single neutral gas.​

Answer 1

Answer:

Hg(NO3)2 produces yellow residue HgO upon heating , further heating it changes colour to red and on further heating it decomposes to give black residue of mercury and O2

Ca(NO3)2 produces a white precipitate Ca(OH)2 when treated with sodium hydroxide

NH4NO3 when heated gives N2O and H2O which are neutral oxides

NaNO3 upon heating gives sodium nitrite and oxygen gas which is nuetral , now Upon extreme heating sodium nitrite decomposes form sodium oxide ,N2 O2 and sodium oxide combines with SiO2(test tube) in presence of water to form silicate that is sodium silicate or water glass

AgNO3 decomposes when exposed to light to give Ag