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Mole concept and Stoichiometry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryMole concept and Stoichiometry1 Mark
MCQ
If two compounds have the same empirical formula but different molecular formula, they must have
  • A
    Different percentage composition
  • B
    Different molecular weights
  • C
    Same viscosity
  • D
    Same vapour density
✓

Answer

B. Different molecular weights
Explanation: If two compounds have the same empirical formula but different molecular formula, they must have different molecular weights. For example, CH2O and C6H12O6 have the same empirical formula but different molecular formula, they have different molecular weights.

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