Chlorides And Nitrates

Chlorides:

$2 N a + C l_{2} \to 2 N a Cl$

$Z n + 2 H Cl \to Z n C l_{2} + H_{2}$

$C u O + 2 H Cl \to C u C l_{2} + H_{2} O$

$C a C O_{3} + 2 H Cl \to C a C l_{2} + C O_{2} + H_{2} O$

$C a (O H)_{2} + 2 H Cl \to C a C l_{2} + H_{2} O$

$A g N O_{3} + N a Cl \to A g Cl ↓ + N a N O_{3}$

$H g_{2} (N O_{3})_{2} + 2 N a Cl \to H g_{2} C l_{2} + N a N O_{3}$

-Most chlorides are soluble except $A g Cl$ , $H g_{2} C l_{2}$ $P b C l_{2}$ and $C u_{2} C l_{2}$

-(But $P b C l_{2}$ is soluble in hot water

-They are mostly thermally stable.

-Certain chlorides may sublimate on heating. Eg: $N H_{4} Cl$

$Z n + 4 H N O_{3} \to Z n (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$

$C a O + 2 H N O_{3} \to C a (N O_{3})_{2} + H_{2} O$

$C a C O_{3} + 2 H N O_{3} \to C a (N O_{3})_{2} + C O_{2} + H_{2} O$

-All metal nitrates are soluble except $B i (N O_{3})_{3}$ which is insoluble.

-Alkali metal nitrates are decomposed as follows:

$2 N a N O_{3} \to 2 N a N O_{2} + O_{2}$

$2 K N O_{3} \to 2 K N O_{2} + O_{2}$

$2 R b N O_{3} \to 2 R b N O_{2} + O_{2}$

(Except $L i N O_{3}$ )

$4 L i N O_{3} \to 2 L i_{2} O + 4 N O_{2} + O_{2}$

However, except above decomposition, all other decomposes as;

$2 P b (N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2}$

$2 M g (N O_{3})_{2} \to 2 M g O + 4 N O_{2} + O_{2}$

$M e t a lN i t r a t e \to M e t a lO x i d e + N O_{2} + O_{2}$

$H g (N O_{3})_{2} \to H g + 2 N O_{2} + O_{2}$

$2 A g (N O_{3}) \to 2 A g + 2 N O_{2} + O_{2}$