Q. A compound P having the molecular formula C 2 H 4 O 2 is used as a preservative . It is prepared by the oxidation of the second member of the alcohol family. Q in the present of audified K 2 C r 2 O 7 a. Identify P and Q. b. Given chemical equation for the reaction of P with Sodium carbonate. c. What is the effect of P on most litmus paper? Share with your friends Share 1 Vartika Jain answered this Dear Student, (a) The second member of alcohol family is CH3CH2OH i.e. ethanol. So, Q is CH3CH2OHP is formed by oxidation of Q, so P is acetic acid i.e. CH3COOH(b) 2CH3COOH + Na2CO3 → 2CH3COONa + CO2 + H2O(c) P is an acid, so it turns blue litmus red. 3 View Full Answer Akanksha Sen answered this Please find this answer 1 Tanya Shankar answered this (a)P=ethanoic acid Q=ethanol (b)ethanoic acid+sodium carbonate=sodium ethaonate+Carbon dioxide+water (c)no effect 1 Hisham A answered this a)P-CH3COOH ; Q-C2H5OH b)2CH3COOH+Na2CO3 = 2CH3COONa+CO2+H2O c)It turns blue litmus red. 0 Tanya Shankar answered this sorry (p turns blue litmus red as it is an acid) -1