Stoichiometry and its Calculations
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307018 \(\mathrm{X}\) ' litres of carbon monoxide is present at STP. It is completely oxidized to \(\mathrm{\mathrm{CO}_{2}}\). The volume of \(\mathrm{\mathrm{CO}_{2}}\) formed is 11.207 litres at STP. What is the value of ' \(\mathrm{\mathrm{X}}\) ' in litres?

1 22.414
2 11.207
3 5.6035
4 44.828
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307019 Two litre of oxygen was reacted with five litre of CO at STP. The limiting reagent and mass of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) produced are, respectively

1 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{1}}{\rm{.8}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
2 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{2}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
3 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{7}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
4 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{3}}{\rm{.93}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307020 How many moles of \({{\rm{P}}_{\rm{4}}}{{\rm{O}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {{\rm{P}}_{\rm{4}}}{{\rm{O}}_{{\rm{10}}}}\), respectively will be produced by the combustion of 12.4 g of phosphorous (atomic mass = 31) in 12.8 g of oxygen, leaving no \({{\rm{P}}_{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\rm{or}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) ?

1 0.1 mol and 0.3 mol
2 0.15 mol and 0.25 mol
3 0.05 mol each
4 0.1 mol each
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307021 Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone \({\rm{(CaC}}{{\rm{O}}_{\rm{3}}}{\rm{)}}\) ?

1 104.4 kg
2 105.4 kg
3 212.8 kg
4 106.4 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307018 \(\mathrm{X}\) ' litres of carbon monoxide is present at STP. It is completely oxidized to \(\mathrm{\mathrm{CO}_{2}}\). The volume of \(\mathrm{\mathrm{CO}_{2}}\) formed is 11.207 litres at STP. What is the value of ' \(\mathrm{\mathrm{X}}\) ' in litres?

1 22.414
2 11.207
3 5.6035
4 44.828
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307019 Two litre of oxygen was reacted with five litre of CO at STP. The limiting reagent and mass of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) produced are, respectively

1 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{1}}{\rm{.8}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
2 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{2}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
3 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{7}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
4 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{3}}{\rm{.93}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307020 How many moles of \({{\rm{P}}_{\rm{4}}}{{\rm{O}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {{\rm{P}}_{\rm{4}}}{{\rm{O}}_{{\rm{10}}}}\), respectively will be produced by the combustion of 12.4 g of phosphorous (atomic mass = 31) in 12.8 g of oxygen, leaving no \({{\rm{P}}_{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\rm{or}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) ?

1 0.1 mol and 0.3 mol
2 0.15 mol and 0.25 mol
3 0.05 mol each
4 0.1 mol each
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307021 Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone \({\rm{(CaC}}{{\rm{O}}_{\rm{3}}}{\rm{)}}\) ?

1 104.4 kg
2 105.4 kg
3 212.8 kg
4 106.4 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307018 \(\mathrm{X}\) ' litres of carbon monoxide is present at STP. It is completely oxidized to \(\mathrm{\mathrm{CO}_{2}}\). The volume of \(\mathrm{\mathrm{CO}_{2}}\) formed is 11.207 litres at STP. What is the value of ' \(\mathrm{\mathrm{X}}\) ' in litres?

1 22.414
2 11.207
3 5.6035
4 44.828
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307019 Two litre of oxygen was reacted with five litre of CO at STP. The limiting reagent and mass of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) produced are, respectively

1 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{1}}{\rm{.8}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
2 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{2}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
3 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{7}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
4 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{3}}{\rm{.93}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307020 How many moles of \({{\rm{P}}_{\rm{4}}}{{\rm{O}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {{\rm{P}}_{\rm{4}}}{{\rm{O}}_{{\rm{10}}}}\), respectively will be produced by the combustion of 12.4 g of phosphorous (atomic mass = 31) in 12.8 g of oxygen, leaving no \({{\rm{P}}_{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\rm{or}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) ?

1 0.1 mol and 0.3 mol
2 0.15 mol and 0.25 mol
3 0.05 mol each
4 0.1 mol each
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307021 Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone \({\rm{(CaC}}{{\rm{O}}_{\rm{3}}}{\rm{)}}\) ?

1 104.4 kg
2 105.4 kg
3 212.8 kg
4 106.4 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307018 \(\mathrm{X}\) ' litres of carbon monoxide is present at STP. It is completely oxidized to \(\mathrm{\mathrm{CO}_{2}}\). The volume of \(\mathrm{\mathrm{CO}_{2}}\) formed is 11.207 litres at STP. What is the value of ' \(\mathrm{\mathrm{X}}\) ' in litres?

1 22.414
2 11.207
3 5.6035
4 44.828
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307019 Two litre of oxygen was reacted with five litre of CO at STP. The limiting reagent and mass of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) produced are, respectively

1 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{1}}{\rm{.8}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
2 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{2}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
3 \({{\rm{O}}_{\rm{2}}}{\rm{,}}{\mkern 1mu} {\mkern 1mu} {\rm{7}}{\rm{.86}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
4 \({\rm{CO,}}{\mkern 1mu} {\mkern 1mu} {\rm{3}}{\rm{.93}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307020 How many moles of \({{\rm{P}}_{\rm{4}}}{{\rm{O}}_{\rm{6}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {{\rm{P}}_{\rm{4}}}{{\rm{O}}_{{\rm{10}}}}\), respectively will be produced by the combustion of 12.4 g of phosphorous (atomic mass = 31) in 12.8 g of oxygen, leaving no \({{\rm{P}}_{\rm{4}}}{\mkern 1mu} {\mkern 1mu} {\rm{or}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) ?

1 0.1 mol and 0.3 mol
2 0.15 mol and 0.25 mol
3 0.05 mol each
4 0.1 mol each
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307021 Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone \({\rm{(CaC}}{{\rm{O}}_{\rm{3}}}{\rm{)}}\) ?

1 104.4 kg
2 105.4 kg
3 212.8 kg
4 106.4 kg