E-PolyLearning

1. Which of the following does stoichiometry of a reaction is all about?
a. Extent of reaction
b. Heat of reaction
c. Amount of reactants and products
d. None of the mentioned
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Answer: (c).Amount of reactants and products

2. C₂H₄ + xO₂ -> 2CO₂ + yH₂O, what is the value of x + y?
a. 2
b. 3
c. 5
d. 8
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Answer: (c).5

3. C₅H₁₂ + xO₂ -> yCO₂ + zH₂O, what is the value of x + y*z?
a. 24
b. 38
c. 46
d. 54
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Answer: (b).38

4. wC₃H₆O₃ + xO₂ –> yCO₂ + zH₂O, what is the value of w + x + y + z?
a. 3
b. 6
c. 10
d. 14
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Answer: (d).14

5. wC₃H₇O₄ + xO₂ -> yCO₂ + zH₂O, what is the value of w + x + y + z?
a. 21
b. 35
c. 41
d. 47
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Answer: (c).41

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