Formation Of Nitric Acid Flashcards
(12 cards)
What forms nitric oxide in acid rain?
Nitrogen combines with oxygen at high temperatures
This occurs in internal combustion engines or furnaces and during lightning discharge.
What is the reaction equation for nitrogen combining with oxygen to form nitric oxide?
N₂ + O₂ → 2NO
What happens to nitric oxide after it is formed?
It is oxidized to nitrogen dioxide
The equation for this reaction is 2NO + O₂ → 2NO₂.
What acids are formed when nitrogen dioxide reacts with water vapor?
Nitrous acid (HNO₂) and nitric acid (HNO₃)
The reaction is H₂O + 2NO₂ → HNO₂ + HNO₃.
What is the primary cause of acidity in rain?
Reaction of oxides of nitrogen with water vapor
This forms dilute acids.
What role does a catalytic converter play in internal combustion engines?
Helps reduce pollution by converting nitrogen oxides
It separates nitrogen atoms from NO and NO₂, freeing oxygen.
What is the reduction catalyst used in a catalytic converter?
Platinum (Pt) and Palladium (Pd)
What is the outcome of the conversion of nitrogen oxides in a catalytic converter?
Converted to free nitrogen
The reactions are 2NO → N₂ + O₂ and 2NO₂ → N₂ + 2O₂.
What are dry deposits in the context of acid rain?
Deposits of pollutants that do not involve precipitation
What are wet deposits in the context of acid rain?
Acidic rain or precipitation containing acids
What is the chemical reaction for the formation of sulfuric acid in acid rain?
SO₂ + H₂O → H₂SO₄
Fill in the blank: The formation of nitric acid in acid rain involves nitrogen dioxide reacting with water vapor to form _______ and _______.
nitrous acid (HNO₂), nitric acid (HNO₃)
