The oxidation of ammonia in excess air produces?
NO
N2O
NO2
N2O4
Correct answer is A
In the presence of heated platinum catalyst, ammonia reacts with excess air to produce nitrogen (II) oxide, NO, (instead of nitrogen) and water.
increasing the temperature and decreasing the pressure
increasing the pressure and increasing the temperature
decreasing the temperature and increasing the pressure
decreasing the pressure and decreasing the temperature
Correct answer is C
No explanation has been provided for this answer.
The equilibrium is shifted to the left
The equilibrium is shifted to the right
There is no effect
More H2(g) is produced
Correct answer is C
When amount / volume of gaseous reactants equal amount / volume of gaseous products, the change in pressure has no effect on the equilibrium position.
A catalyst increase the rate of a chemical reaction by providing a path that?
raise the activiation energy
increase the temperature
lowers the activation energy
increase the concentration
Correct answer is C
The rate of a reaction can be increased by adding a suitable catalyst.
A catalyst is a substance which increases the rate of a chemical reaction but it is not used up (remains chemically unchanged at the end).
It provides an alternative reaction pathway of lower activation energy.
X
Y
Z
R
Correct answer is D
No explanation has been provided for this answer.
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