Empirical Formula and Molecular Formula
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306639 An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71%, and H, 9.67%. The empirical formula of the compound would be

1 \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{O}}\)
2 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{CHO}}\)
4 \({\rm{C}}{{\rm{H}}_{\rm{4}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306640 A hydrocarbon contains 82.8% carbon. The empirical formula is

1 \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{5}}}\)
3 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{{\rm{10}}}}\)
4 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{6}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306641 0.30 g of an organic compound containing C, H and O on combustion yields 0.44 g \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) and 0.18 g \({{\rm{H}}_{\rm{2}}}{\rm{O}}\). If one mol of compound weight 60, then the molecular formula of the compound is

1 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{8}}}{\rm{O}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{\rm{6}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306642 Statement A :
Molecular formula shows the exact number of different types of atoms present in a compound.
Statement B :
Molecular formula can be obtained directly from empirical formula which represents the simplest whole number ratio of various atoms present in a compound.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306639 An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71%, and H, 9.67%. The empirical formula of the compound would be

1 \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{O}}\)
2 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{CHO}}\)
4 \({\rm{C}}{{\rm{H}}_{\rm{4}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306640 A hydrocarbon contains 82.8% carbon. The empirical formula is

1 \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{5}}}\)
3 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{{\rm{10}}}}\)
4 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{6}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306641 0.30 g of an organic compound containing C, H and O on combustion yields 0.44 g \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) and 0.18 g \({{\rm{H}}_{\rm{2}}}{\rm{O}}\). If one mol of compound weight 60, then the molecular formula of the compound is

1 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{8}}}{\rm{O}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{\rm{6}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306642 Statement A :
Molecular formula shows the exact number of different types of atoms present in a compound.
Statement B :
Molecular formula can be obtained directly from empirical formula which represents the simplest whole number ratio of various atoms present in a compound.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306639 An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71%, and H, 9.67%. The empirical formula of the compound would be

1 \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{O}}\)
2 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{CHO}}\)
4 \({\rm{C}}{{\rm{H}}_{\rm{4}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306640 A hydrocarbon contains 82.8% carbon. The empirical formula is

1 \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{5}}}\)
3 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{{\rm{10}}}}\)
4 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{6}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306641 0.30 g of an organic compound containing C, H and O on combustion yields 0.44 g \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) and 0.18 g \({{\rm{H}}_{\rm{2}}}{\rm{O}}\). If one mol of compound weight 60, then the molecular formula of the compound is

1 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{8}}}{\rm{O}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{\rm{6}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306642 Statement A :
Molecular formula shows the exact number of different types of atoms present in a compound.
Statement B :
Molecular formula can be obtained directly from empirical formula which represents the simplest whole number ratio of various atoms present in a compound.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306639 An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71%, and H, 9.67%. The empirical formula of the compound would be

1 \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{O}}\)
2 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{CHO}}\)
4 \({\rm{C}}{{\rm{H}}_{\rm{4}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306640 A hydrocarbon contains 82.8% carbon. The empirical formula is

1 \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{5}}}\)
3 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{{\rm{10}}}}\)
4 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{6}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306641 0.30 g of an organic compound containing C, H and O on combustion yields 0.44 g \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) and 0.18 g \({{\rm{H}}_{\rm{2}}}{\rm{O}}\). If one mol of compound weight 60, then the molecular formula of the compound is

1 \({{\rm{C}}_{\rm{3}}}{{\rm{H}}_{\rm{8}}}{\rm{O}}\)
2 \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{C}}_{\rm{4}}}{{\rm{H}}_{\rm{6}}}{\rm{O}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306642 Statement A :
Molecular formula shows the exact number of different types of atoms present in a compound.
Statement B :
Molecular formula can be obtained directly from empirical formula which represents the simplest whole number ratio of various atoms present in a compound.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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