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Ethane of volume 400 cm\(^3\) was completely burnt in excess oxygen according to the following equation:...

Chemistry
WAEC 2024

Ethane of volume 400 cm\(^3\) was completely burnt in excess oxygen according to the following equation:

2C\(_2\)H\(_6\)\(_(g)\)   +  7O\(_2\)\(_(g)\) → 6H\(_2\)O\(_(g)\) + 4CO\(_2\)\(_(g)\)

Calculate the volume of steam that would be produced.

  • A. 200 cm\(^3\)
  • B. 400 cm\(^3\)
  • C. 600 cm\(^3\)
  • D. 1200 cm\(^3\)
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Correct Answer: Option D
Explanation

2C\(_2\)H\(_6\)\(_(g)\)   +  7O\(_2\)\(_(g)\) → 6H\(_2\)O\(_(g)\) + 4CO\(_2\)\(_(g)\)

  2 moles                               6 moles

  400cm\(^3\)                             X cm\(^3\)

 X  =  \(\frac{{400}\times{6}}{2}\)

X = 1200cm\(^3\)


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