Stoichiometry and its Calculations
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306983 A mixture of \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) and NaCl weighing 4.44 g is treated with sodium carbonate solution to \({\rm{C}}{{\rm{a}}^{{\rm{2 + }}}}\) ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is

1 75
2 30.6
3 25
4 69.4
KCET - 2010
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306984 40 g of a sample of carbon on combustion left 10% of it unreacted. The volume of oxygen required at STP for this combustion reaction is

1 22.4 L
2 67.2 L
3 11.2 L
4 44.8 L
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306985 Which of the following statement is correct?

1 Limiting reagent controls the amount of product formed
2 Excess reagent controls the amount of product formed
3 Limiting reagent can be analysed without balancing the chemical reaction
4 All are correct
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306986 If potassium chlorate is 80% pure, then 48 g of oxygen would be produced from (atomic mass of K = 39):

1 \({\rm{153}}{\rm{.12}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
2 \({\rm{122}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
3 \({\rm{245}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
4 \({\rm{98}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306983 A mixture of \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) and NaCl weighing 4.44 g is treated with sodium carbonate solution to \({\rm{C}}{{\rm{a}}^{{\rm{2 + }}}}\) ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is

1 75
2 30.6
3 25
4 69.4
KCET - 2010
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306984 40 g of a sample of carbon on combustion left 10% of it unreacted. The volume of oxygen required at STP for this combustion reaction is

1 22.4 L
2 67.2 L
3 11.2 L
4 44.8 L
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306985 Which of the following statement is correct?

1 Limiting reagent controls the amount of product formed
2 Excess reagent controls the amount of product formed
3 Limiting reagent can be analysed without balancing the chemical reaction
4 All are correct
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306986 If potassium chlorate is 80% pure, then 48 g of oxygen would be produced from (atomic mass of K = 39):

1 \({\rm{153}}{\rm{.12}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
2 \({\rm{122}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
3 \({\rm{245}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
4 \({\rm{98}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306983 A mixture of \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) and NaCl weighing 4.44 g is treated with sodium carbonate solution to \({\rm{C}}{{\rm{a}}^{{\rm{2 + }}}}\) ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is

1 75
2 30.6
3 25
4 69.4
KCET - 2010
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306984 40 g of a sample of carbon on combustion left 10% of it unreacted. The volume of oxygen required at STP for this combustion reaction is

1 22.4 L
2 67.2 L
3 11.2 L
4 44.8 L
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306985 Which of the following statement is correct?

1 Limiting reagent controls the amount of product formed
2 Excess reagent controls the amount of product formed
3 Limiting reagent can be analysed without balancing the chemical reaction
4 All are correct
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306986 If potassium chlorate is 80% pure, then 48 g of oxygen would be produced from (atomic mass of K = 39):

1 \({\rm{153}}{\rm{.12}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
2 \({\rm{122}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
3 \({\rm{245}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
4 \({\rm{98}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
For More Updates join with Us
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306983 A mixture of \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) and NaCl weighing 4.44 g is treated with sodium carbonate solution to \({\rm{C}}{{\rm{a}}^{{\rm{2 + }}}}\) ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is

1 75
2 30.6
3 25
4 69.4
KCET - 2010
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306984 40 g of a sample of carbon on combustion left 10% of it unreacted. The volume of oxygen required at STP for this combustion reaction is

1 22.4 L
2 67.2 L
3 11.2 L
4 44.8 L
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306985 Which of the following statement is correct?

1 Limiting reagent controls the amount of product formed
2 Excess reagent controls the amount of product formed
3 Limiting reagent can be analysed without balancing the chemical reaction
4 All are correct
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306986 If potassium chlorate is 80% pure, then 48 g of oxygen would be produced from (atomic mass of K = 39):

1 \({\rm{153}}{\rm{.12}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
2 \({\rm{122}}{\rm{.5}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
3 \({\rm{245}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)
4 \({\rm{98}}{\rm{.0}}{\mkern 1mu} {\mkern 1mu} {\rm{g}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {\rm{KCl}}{{\rm{O}}_{\rm{3}}}\)