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Solution: “Strike anywhere” matches contain the compound tetraphosphorus trisulfide, which burns to form tetraphosphorus decoxide and sulfur dioxide gas. How many milliliters of sulfur dioxide, measured at 725 torr and 32°C, can be produced from burning 0.800 g of tetraphosphorus trisulfide?

Problem

“Strike anywhere” matches contain the compound tetraphosphorus trisulfide, which burns to form tetraphosphorus decoxide and sulfur dioxide gas. How many milliliters of sulfur dioxide, measured at 725 torr and 32°C, can be produced from burning 0.800 g of tetraphosphorus trisulfide?

Solution
  • First thing is to write the balanced equation of the reaction where tetraphosphous trisulfide will appear as P4S3, tetraphosphorus decoxide as P4O10 and sulfur dioxide as SO2
  • Combustion is a reaction where O2 is being used as reactant to form products
  • We will be using the ideal gas equation as well as the stoichiometry in the balanced equation
  • Balanced reaction will appear as:
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