4 A given compound is analyzed and found to contain only C, H and O. When a 3.750 g sample of
this compound is completely combusted in the presence of excess oxygen, the reaction yields
10.05 g of carbon dioxide and 2.47 g of water. What is the empirical formula of this compound?
a) C2H5O
b) C4H405
c) CH3O2
d) C5H60

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Electron equations of the given changes are as follow,a)                              cu      →      cu⁺²  + 2e⁻b)                              mg⁺²  +  2 e⁻      →      mgc)                              cl⁻    →      cl  +  1e⁻d)                              s  +  2 e⁻    →      s²⁻e)                                o²⁻      →      o  +  2 e⁻f)                              p  +  3 e⁻    →      p³⁻g)                              fe²⁺    →      fe³⁺  + 1 e⁻h)                              s²⁻    →      s⁴⁺  +  6 e⁻