Magnesium Carbonate and CO2 Calculations

The video tutorial explains how to calculate the mass of pure CO2 formed when 500 grams of magnesium carbonate with 64% purity reacts with excess HCl. It covers the chemical reaction, stoichiometry, and molar mass calculations, leading to the final result of 167.6 grams of CO2. The tutorial also promotes the Doubt and app for instant solutions to academic queries.

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What is the balanced chemical equation for the reaction between magnesium carbonate and HCl?

• MgCO3 + 2HCl → MgCl2 + H2 + CO2

• MgCO3 + HCl → MgCl2 + CO2

• MgCO3 + HCl → MgCl + H2O + CO2

• MgCO3 + 2HCl → MgCl2 + H2O + CO2

How is the weight of pure magnesium carbonate calculated from the impure sample?

• By multiplying the total weight by the purity percentage

• By dividing the total weight by the purity percentage

• By subtracting the purity percentage from the total weight

• By adding the total weight and purity percentage

What is the weight of pure magnesium carbonate obtained from a 500g impure sample with 64% purity?

• 280 grams

• 400 grams

• 320 grams

• 350 grams

What is the stoichiometric ratio of magnesium carbonate to carbon dioxide in the reaction?

• 1:1

• 1:2

• 2:1

• 1:3

What is the molar mass of magnesium carbonate used in the calculations?

• 64 grams

• 44 grams

• 100 grams

• 84 grams

How much CO2 is produced from 84 grams of magnesium carbonate?

• 64 grams

• 22 grams

• 84 grams

• 44 grams

What is the final calculated mass of CO2 produced from 320 grams of pure magnesium carbonate?

• 167.6 grams

• 150 grams

• 200 grams

• 180 grams

What is the main conclusion of the video regarding the mass of CO2 formed?

• 167.6 grams of CO2 is formed

• 200 grams of CO2 is formed

• 150 grams of CO2 is formed

• 180 grams of CO2 is formed

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