A) 17.9 kg
B) 9 kg
C) 27 kg
D) 1.8 kg
Correct Answer: A
Solution :
Isobutane and n-butane \[\left[ {{C}_{4}}{{H}_{10}} \right]\] have same molecular formula; \[{{C}_{4}}{{H}_{10}}+\frac{13}{2}{{O}_{2}}\to 4C{{O}_{2}}+5{{H}_{2}}O\] For 58gm of \[{{C}_{4}}{{H}_{10}}\] 208 gm \[{{O}_{2}}\] is required then for 5 kg of \[{{C}_{4}}{{H}_{10}}\] \[{{O}_{2}}=\frac{5\times 208}{58}=17.9\,kg\]
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