Question

The total number of products formed in the following reactions:
LiNO$_3$ $\xrightarrow{\Delta}$ Products NaNO$_3$ $\xrightarrow{\Delta}$ Products Be(NO$_3$)$_2$ $\xrightarrow{\Delta}$ Products

• A. 7
• B. 9
• C. 6
• D. 8

Hint:

Remember the thermal decomposition reactions of alkali metal and alkaline earth metal nitrates.

Answer 1

The Correct Option is D

1. Decomposition of LiNO$_3$: * 4LiNO$_3$ $\xrightarrow{\Delta}$ 2Li$_2$O + 4NO$_2$ + O$_2$ * Products: Li$_2$O, NO$_2$, O$_2$ (3 products) 
2. Decomposition of NaNO$_3$: * 2NaNO$_3$ $\xrightarrow{\Delta}$ 2NaNO$_2$ + O$_2$ * Products: NaNO$_2$, O$_2$ (2 products) 
3. Decomposition of Be(NO$_3$)$_2$: * 2Be(NO$_3$)$_2$ $\xrightarrow{\Delta}$ 2BeO + 4NO$_2$ + O$_2$ * Products: BeO, NO$_2$, O$_2$ (3 products) 
Total number of products: * 3 (LiNO$_3$) + 2 (NaNO$_3$) + 3 (Be(NO$_3$)$_2$) = 8 products 
Therefore, the total number of products formed is 8. 
Final Answer: 8.