Which of the following compounds when heated separately up to 500° C , release brown colored gas? Cu(NO3)2 Hg(NO3)2 NaNO3 AgNO3 I II III IV

Question

Which of the following compounds when heated separately up to 500° C , release brown colored gas? Cu(NO3)2 Hg(NO3)2 NaNO3 AgNO3 I II III IV (A) I and II (B) II and III (C) II,Ill and IV (D) I,II and IV

Tardigrade Admin · Accepted Answer

NO 2 Is a brown coloured gas: Cu (NO3)2 xrightarrowΔ CuO downarrow+2( NO )2 uparrow+(1/2) O 2 uparrow Hg (NO 3)2 arrow Hg downarrow+2( NO )2 uparrow+O2 uparrow NaNO3 xrightarrow[ textbelow 500°C]Δ× NaNO AgNO xrightarrowΔ Ag downarrow+(1/2) O 2 uparrow

$C u (N O_{3})_{2}$	$H g (N O_{3})_{2}$	$N a N O_{3}$	$A g N O_{3}$
I	II	III	IV

Q. Which of the following compounds when heated separately up to $50 0^{^{\circ}} C$ , release brown colored gas?

$C u (N O_{3})_{2}$ $H g (N O_{3})_{2}$ $N a N O_{3}$ $A g N O_{3}$

I II III IV

I and II

II and III

II,Ill and IV

I,II and IV

$N O_{2}$ Is a brown coloured gas:
$C u (N O_{3})_{2} Δ C u O ↓ + 2 (NO)_{2} ↑ + \frac{1}{2} O_{2} ↑$
$H g (N O_{3})_{2} \to H g ↓ + 2 (NO)_{2} ↑ + O_{2} ↑$
$N a N O_{3} Δ below 50 0^{\circ} C \times N a NO$
$A g NO Δ A g ↓ + \frac{1}{2} O_{2} ↑$

Q. Which of the following compounds when heated separately up to 500∘C , release brown colored gas? Cu(NO3​)2​ Hg(NO3​)2​ NaNO3​ AgNO3​ I II III IV