4 moles of sulphur react with 20 moles of fluorine to form sulphur hexa fluoride the excess reagent is
Correct answer: B. Fluorine
- A. Sulphur
- B. Fluorine
- C. Both a and b
- D. None of these
Explanation
The balanced chemical equation is as followS + 3F2 => SF61 S => 1 SF64 S => x SF6x= 4 SF63 F2 => 1SF620 F2 => xSF6x= 20/3 SF6As more moles of SF6 are produced from fluorine hence it is in exces.
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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