High School

How many grams of ethanol, [tex]C_2H_5OH[/tex], can be boiled with 206.2 kJ of heat energy?

The molar heat of vaporization of ethanol is 38.6 kJ/mol.

Answer :

246.0 grams of ethanol, c2h5oh, can be boiled with 206.2 kj of heat energy? the molar heat of vaporization of ethanol is 38.6 kj/mol.

We can use the following equation to determine how much ethanol can be boiled using 206.2 kJ of heat energy:

q = n*ΔHvap

where n is the substance's (in moles) vaporized amount of ethanol, Hvap is the molar heat of vaporization of ethanol, and q is the amount of heat energy given.

First, we may use the equation to determine how much ethanol was vaporized:

q/ΔHvap = n

Inputting the values provided yields:

5.34 mol is equal to n = 206.2 kJ/38.6 kJ/mol.

Next, we can convert the amount of substance to mass using the molar mass of ethanol (46.07 g/mol):

m = n * M

where M is ethanol's molar mass.

When we change the values, we obtain:

246.0 g= 5.34 mol * 46.07 g/mol

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