Question

Рассчитайте массу углерода необходимого для реакции с 0,2 моль водорода

Answer 1

Дано:                                                     
n(H2) = 0,2 моль           
Найти: m (СH₄)
решение:            
            0,2 моль       х г                       
C     + 2H₂          = CH₄            
             2 моль         16 г
х = 0,2 моль ∙ 16 г\2 моль = 1,6 г
ответ:  m (СH₄) = 1,6 г

Answer 2

Calculating the Mass of Carbon Required for the Reaction

To calculate the mass of carbon required for the reaction with 0.2 moles of hydrogen, we can use the balanced chemical equation for the reaction between carbon and hydrogen to form methane (CH4).

The balanced chemical equation for the reaction is: C + 2H2 → CH4

From the equation, we can see that 1 mole of carbon reacts with 2 moles of hydrogen to produce 1 mole of methane.

Given that we have 0.2 moles of hydrogen, we can use the stoichiometry of the reaction to calculate the mass of carbon required.

Using the molar mass of carbon (C) and hydrogen (H), we can calculate the mass of carbon required.

Calculation

The molar mass of carbon (C) is approximately 12.01 g/mol. The molar mass of hydrogen (H) is approximately 1.008 g/mol.

Using the equation: moles = mass / molar mass

We can rearrange the equation to solve for the mass: mass = moles × molar mass

Given: - Moles of hydrogen (H2) = 0.2 moles

We can calculate the mass of carbon required using the equation: mass = moles × molar mass

Substituting the values: mass = 0.2 moles × 12.01 g/mol

Result

The mass of carbon required for the reaction with 0.2 moles of hydrogen is approximately 2.402 g.