3. An organic compound contains C, H and O only. Complete combustion of 0.15g of the compound gave 0.22g of CO₂ and 0.09g of H₂O. When 6.0g of the compound was dissolved to 1dm³ of solution and titrated with standard 0.1M NaOH. 25cm³ of the NaOH was found to neutralize 25cm³ of the solution of the compound. When treated with Na2CO3, a small amount of the organic compound gave effervescence of a gas which turns slakelime milky. Determine the % composition of the compound and deduce the E. F and M. F. suggest possible structure(s) of the compound. (C = 12.00, H = 1.00, 0 = 16.00 Na = 23.00)
​