For the following reaction, 9.37 grams of carbon (graphite) are allowed to react with 12.6 grams of oxygen gas . carbon (graphite)(s) + oxygen(g) carbon dioxide(g) What is the maximum mass of carbon dioxide that can be formed? grams What is the FORMULA for the limiting reagent? What mass of the excess reagent remains after the reaction is complete? grams Submit AnswerRetry Entire Group

The maximum mass of carbon dioxide formed is 17.34 grams, the formula of limiting reagent is and the mass of excess reagent (carbon) remained is 4.644 grams

Explanation:

To calculate the number of moles, we use the equation:

    .....(1)

Given mass of carbon = 9.37 g

Molar mass of carbon = 12 g/mol

Putting values in equation 1, we get:

Given mass of oxygen gas = 12.6 g

Molar mass of oxygen gas = 32 g/mol

Putting values in equation 1, we get:

The chemical equation for the reaction of carbon and oxygen gas follows:

By Stoichiometry of the reaction:

1 moles of oxygen gas reacts with 1 mole of carbon metal.

So, 0.394 moles of oxygen gas will react with = of carbon metal.

As, given amount of carbon metal is more than the required amount. So, it is considered as an excess reagent.

Thus, oxygen gas is considered as a limiting reagent because it limits the formation of product.

Amount of excess reagent (carbon) left = [0.781 - 0.394] = 0.387 moles

By Stoichiometry of the reaction:

1 moles of oxygen gas produces 1 mole of carbon dioxide

So, 0.394 moles of oxygen gas will produce = of carbon dioxide

Now, calculating the mass of carbon and carbon dioxide from equation 1, we get:

Excess moles of carbon = 0.387 moles

Molar mass of carbon = 12 g/mol

Putting values in equation 1, we get:

Moles of carbon dioxide = 0.394 moles

Molar mass of carbon dioxide = 44 g/mol

Putting values in equation 1, we get:

Hence, the maximum mass of carbon dioxide formed is 17.34 grams, the formula of limiting reagent is and the mass of excess reagent (carbon) remained is 4.644 grams

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