2 liters of alkadiene has a mass equal to 4.82 g. Derive the molecular formula of alkadiene.
October 13, 2021 | education
| The volume of alkadiene is 2 liters.
The mass of alkadiene is 4.82 g.
Let’s determine the molecular formula of this alkadiene.
First, we write down the general formula for alkadienes.
CnH2n-2.
First, we determine the molar mass of the compound.
n = m / M.
n = V / Vm.
M = m * Vm / V.
M = 4.82 * 22.4 / 2 = 54.
We write the expression.
12n + 2n – 2 = 54.
14n – 2 = 54.
14n = 54 + 2.
14n = 56.
Let’s define the unknown value of n.
n = 56/14 = 4.
The result is an answer equal to 4.
We get the following formula.
C4H6.
This compound is called butadiene.
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