Give a balanced equation for each of the following types of reactions:

1.	Give a balanced equation for each of the following types of reactions:A direct combination reaction between phosphorus and a neutral gas. A soluble salt of lead formed from an insoluble base by double decomposition neutralisation.A thermal decomposition reaction of a salt which results in the formation of nitrogen gas. A synthesis reaction between a metal & a non-metal resulting in formation of an insoluble salt of iron
Answer» 1) A direct combination reaction between phosphorus and a NEUTRAL gas. Ans: $\sf \: 4P + 5O_2 \rightarrow 2P_2O_5$ 2)A soluble salt of lead FORMED from an INSOLUBLE base by double decomposition - neutralisation. Ans: $\sf{PbO + 2HNO_3 \rightarrow Pb(NO_3)_2+H_2O}$ 3) A thermal decomposition reaction of a salt which results in the formation of nitrogen gas Ans: $\sf{(NH_4)_2Cr_2O_7 \rightarrow Cr_2O_3 +4H_2O +N_2}$ 4) A synthesis reaction between a metal & a non-metal resulting in formation of an insoluble salt of iron Ans: $\sf Fe+ S \rightarrow FeS$

Give a balanced equation for each of the following types of reactions:A direct combination reaction between phosphorus and a neutral gas. A soluble salt of lead formed from an insoluble base by double decomposition neutralisation.A thermal decomposition reaction of a salt which results in the formation of nitrogen gas. A synthesis reaction between a metal & a non-metal resulting in formation of an insoluble salt of iron

Answer»

1) A direct combination reaction between phosphorus and a NEUTRAL gas.

Ans: $\sf \: 4P + 5O_2 \rightarrow 2P_2O_5$

2)A soluble salt of lead FORMED from an INSOLUBLE base by double decomposition - neutralisation.

Ans: $\sf{PbO + 2HNO_3 \rightarrow Pb(NO_3)_2+H_2O}$

3) A thermal decomposition reaction of a salt which results in the formation of nitrogen gas

Ans: $\sf{(NH_4)_2Cr_2O_7 \rightarrow Cr_2O_3 +4H_2O +N_2}$

4) A synthesis reaction between a metal & a non-metal resulting in formation of an insoluble salt of iron

Ans: $\sf Fe+ S \rightarrow FeS$