Reaction of Phosphorus with Sodium Hydroxide

Click on the correct answer.


1	The following compounds are examples of common compounds in which a non-metallic element is combined with hydrogen(s):
		methane
		hydrogen sulfide
		ammonia
		phosphine
		borane

2	A chemical reaction in which a single reactant ends up in more than one product is known as
		a combination reaction
		a disproportionation reaction
		a double replacement reaction
		a metathetical reaction
		a single replacement reaction

3	Spontaneous combustion is a chemical term which means combustion which
		appears to be fast
		appears to be unable to be stopped
		appears to occur without cause
		appears to occur with fire
		appears to occur with sound

4	Which of the following non-metal compounds containing hydrogen are gases at room temperature:
		BH3 borane
		CH4 methane
		NH3 ammonia
		H2O water
		H2S hydrogen sulfide

5	Which of the following is used as a fertilizer?
		BH3
		CH4
		NH3
		H2O
		H2S

6	Which of the following gases undergoes spontaneous combustion when it is in the air?
		methane
		borane
		ammonia
		phosphine
		hydrogen sulfide

7	In this demonstration phosphine gas was generated by a disproportionation reaction in which
		phosphorus ended up in only one of the products of the reaction
		sodium ended up in more than one product of the reaction
		oxygen ended up in more than one product of the reaction
		phosphorus ended up in two reaction products
		sodium hypophosphite was formed in addition to phosphine gas

8	Phosphine
		is non-toxic
		is spontaneously flammable
		does not occur naturally
		has been known for over 100 years
		has not been known for over 130 years

9	What is true in the reaction of phosphine in oxygen?
		the reaction was a combustion reaction
		light energy was formed
		water was formed
		a phosphorous oxide was formed
		the phosphorus oxide was P4O10

10	Which compound is found in natural gas?
		borane
		phosphine
		methane
		hydrogen sulfide
		ammonia