Question

Какая масса карбита кремния может быть получена при взаимодействии 60 г оксида кремния(4) с углеродом

Answer 1

1 моль оксида кремния даёт 1 моль карбида кремния, то есть 40 граммов!)))

Answer 2

Calculating the Mass of Silicon Carbide

To calculate the mass of silicon carbide that can be obtained from the reaction of 60 g of silicon dioxide (SiO2) with carbon, we can use the balanced chemical equation for the reaction:

SiO2 + 3C → SiC + 2CO

According to the balanced chemical equation, 1 mole of silicon dioxide reacts with 3 moles of carbon to produce 1 mole of silicon carbide. From the molar masses of the compounds involved, we can calculate the mass of silicon carbide produced.

Molar Masses of the Compounds Involved

- Molar mass of SiO2 (silicon dioxide) = 60.08 g/mol - Molar mass of C (carbon) = 12.01 g/mol - Molar mass of SiC (silicon carbide) = 40.10 g/mol

Calculation

1. Calculate the number of moles of SiO2: - Number of moles = Mass / Molar mass - Number of moles of SiO2 = 60 g / 60.08 g/mol = 0.9987 moles

2. Use the mole ratio from the balanced chemical equation to find the moles of SiC produced: - From the balanced equation, 1 mole of SiO2 produces 1 mole of SiC. - Therefore, 0.9987 moles of SiO2 will produce 0.9987 moles of SiC.

3. Calculate the mass of SiC produced: - Mass = Number of moles × Molar mass - Mass of SiC = 0.9987 moles × 40.10 g/mol = 40.07 g

The mass of silicon carbide that can be obtained from the reaction of 60 g of silicon dioxide with carbon is approximately 40.07 grams.