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Determine the mass of sulphur (IV) oxide obtained when 91.0g of oxygen reacts completely with...

Chemistry
WAEC 2002

Determine the mass of sulphur (IV) oxide obtained when 91.0g of oxygen reacts completely with sulphur according to the following equation: S(s) + O\(_2\)(g) → SO\(_2\)(g) [S = 32; O = 16]

  • A. 123g
  • B. 139g
  • C. 155g
  • D. 182g
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Correct Answer: Option D
Explanation

S + O\(_2\) → SO\(_2\).

According to the equation 32g of O\(_2\) produced 64g of SO\(_2\)

therefore 91g of O2 will produce yg of SO2
y = \(\frac{91 * 64}{32}\)

y = 182g of SO\(_2\)


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