ilvvsShatalov3984
05.05.2020 •
Chemistry
In the atmosphere, under the effect of ultraviolet rays, oxygen molecules combine to form ozone molecules, and ozone molecules also photodissociate to form oxygen molecules. Which of the following would be observed if this reaction is in dynamic equilibrium?
3 O2 <--> 2 O3
a
The rates of the forward and reverse reactions will remain the same.
b
The concentration of ozone (O3) will decrease.
c
The concentration of oxygen (O2) will increase.
d
The rates of the forward and reverse reactions will increase.
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Ответ:
In a dynamic equilibrium, the rates of the forward and reverse reactions remain the same.
Also, the concentrations of the reactants and products (O₂ and O₃) are constant.
Ответ:
one mole of sulfuric acid will contain 2 moles of hydrogen atoms. The molar mass of sulfuric acid is 98.0795 g/mol. This means that every mole of sulfuric acid has a mass of 98.0795 g. Since you're dealing with one mole of sulfuric acid, it follows that you will also be dealing with two moles of hydrogen.