A) \[50\text{ }moles\text{ }of\text{ }{{O}_{2}}\]
B) \[125\text{ }moles\text{ }of\text{ }{{O}_{2}}\]
C) \[100\text{ }moles\text{ }of\text{ }{{O}_{2}}\]
D) \[200\text{ }moles\text{ }of\text{ }{{O}_{2}}\]
Correct Answer: B
Solution :
Mass of octane \[= 1.425 \times 1{{0}^{3}}\times 0.8 g\] \[Moles\,\,of\,\,oc\tan e\,\,=\,\,\frac{1425\times 0.8}{114}\,\,=\,\,10\,\,moles\] \[{{C}_{8}}{{H}_{18}}+\frac{25}{2}\,\,{{O}_{2}}\,\,\xrightarrow{{}}\,\,8C{{O}_{2}}\,\,+\,\,I{{H}_{2}}O\] From the equation it can be seen For 1 mole octane oxygen required \[\frac{25}{2}\] moles \[\therefore \] For 10 moles octane oxygen required \[\frac{25}{2}\times 10\]\[=125\text{ }moles\]
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