Question

D.

Check all statements that can be made about the following reaction:

CH_4(g)   + 2 O_2(g) → CO_2(g) + 2 H₂O_(g)

	It is the dominant reaction that occurs when we burn natural gas
	It is a redox reaction
	It is a single displacement reaction
	It is a double displacement reaction
	It is a combustion reaction

C.

Which of the following statement(s) are correct about the following set of reactions?

O₂ + UVB → O + O


O₂ + O → O₃


O + O₃→ O₂ + O₂


	They add up to O3 + UVB → O2 + O
	They describe stratospheric ozone destruction
	They describe stratospheric ozone formation
	They describe tropospheric ozone formation

B.

Check all correct statements about the reaction: N₂ + O₂→ NO_x

	It occurs in our atmosphere when lightening occurs
	In occurs inside plants
	It is one way to “fix” nitrogen
	It shows that usable nitrogen is readily available

A.

Which of the following statements are correct about the following two reactions?  

NO₂ + sunlight → NO + O


O + O₂→ O₃

Check all that apply.

	It is the dominant way to form ozone in the troposphere
	It is the dominant way to form ozone in the stratosphere
	It describes smog formation
	It shows that sunlight and nitrogen dioxide are needed for ozone formation

Answer 1

D).

• It is a combustion reaction ( comustion of methane )
• it is dominant reaction that occurs when we burn fules
• it is a redox reaction [where one molecule gains oxygen (is oxidized) and one molecule gains hydrogen (is reduced].

C).

• They describe stratospheric ozone formation
• They add up to O3 + UVB → O2 + O( as it is one of the reaction in series of ozone formation

B).  

• It occurs in our atmosphere when lightening occurs( NO x gases are also produced naturally by lightning)
• It shows that usable nitrogen is readily available

A).

• It is the dominant way to form ozone in the troposphere
• It describes smog formation [nitric oxide (NO) and nitrogen dioxide (NO₂). These gases contribute to the formation of smog and acid rain, as well as affecting tropospheric ozone.]