Answer : The time taken for the reaction is, 28 s.
Explanation :
Expression for rate law for first order kinetics is given by :
where,
k = rate constant = 0.0632
t = time taken for the process = ?
= initial amount or concentration of the reactant = 1.28 M
= amount or concentration left time 't' =
Now put all the given values in above equation, we get:
Therefore, the time taken for the reaction is, 28 s.
Answer:
Theoretical yield = 3.51 g
Explanation:
The formula for the calculation of moles is shown below:
For :-
Mass of = 1.28 g
Molar mass of = 16.04 g/mol
The formula for the calculation of moles is shown below:
Thus,
For :-
Mass of = 10.1 g
Molar mass of = 31.998 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the given reaction:
1 mole of methane gas reacts with 2 moles of oxygen gas
0.0798 mole of methane gas reacts with 2*0.0798 moles of oxygen gas
Moles of oxygen gas = 0.1596 moles
Available moles of oxygen gas = 0.3156 moles
<u>Limiting reagent is the one which is present in small amount. Thus, is limiting reagent.
</u>
The formation of the product is governed by the limiting reagent. So,
1 mole of methane gas on reaction produces 1 mole of carbon dioxide.
0.0798 mole of methane gas on reaction produces 0.0798 mole of carbon dioxide.
Mole of carbon dioxide = 0.0798 mole
Molar mass of carbon dioxide = 44.01 g/mol
The formula for the calculation of moles is shown below:
Thus,
Mass of = 3.51 g
<u> Theoretical yield = 3.51 g</u>