Question

При окислении с кислородом 150г чугуна образовался 11 г оксида углерода (4). Найдите массовую долю углерода в составе чугуна

Answer 1

Х г            11 г
С + О2 = СО2
12 г          44 г
М(С) = 12 г/моль
М(СО2) = 44 г/моль
х=m(C) = 12 г*11 г/44 г= 3 г
ω(С) = 3 г/150 г ×100% = 2%
Ответ: 2% углерода содержится в чугуне

Answer 2

Calculation of the Mass Fraction of Carbon in Cast Iron

To find the mass fraction of carbon in the cast iron, we need to use the given information about the oxidation of iron with oxygen.

According to the information provided, 150 grams of cast iron reacted with oxygen to form 11 grams of carbon monoxide (CO) (source.

To calculate the mass fraction of carbon, we can use the equation:

Mass fraction of carbon = (mass of carbon / mass of cast iron) x 100%

Let's substitute the values into the equation:

Mass fraction of carbon = (11 grams / 150 grams) x 100%

Calculating this expression, we find:

Mass fraction of carbon = 7.33%

Therefore, the mass fraction of carbon in the cast iron is approximately 7.33%.