Which carboxylic acid `(B) (N.E = 52 gm eq^-1)` loses `CO_2` when heated to give an acid `( C) N.E = 60 gm eq^(-1)` ?

Which carboxylic acid `(B) (N.E = 52 gm eq^-1)` loses `CO_2` when heat

1.	Which carboxylic acid `(B) (N.E = 52 gm eq^-1)` loses `CO_2` when heated to give an acid `( C) N.E = 60 gm eq^(-1)` ?
Answer» If `( C)` is monocarboxylic acid, `N.E. (Ew) = 60` `R - COOH = R + 45 = 60` `:. R = 15 = CH_3` `C = CH_3 COOH` `(B)` has one more `(-COOH)` group which on heating loses `(-CO_2)`. Therefore, it is malonic acid. `((B)rArrunderset(COOH)underset(\|)(CH_(2))-COOH)` `N.E (Ew) = (Mw)/("Ionisable H atoms") = (104)/(2) = 52 gm eq.^-1`.

Discussion

No Comment Found

Related InterviewSolutions

An organic compound [A] is `C_(5)H_(8)O_(3).`On heating with soda lime, it gives [B]. The compound [B] reacts with HCN to give another compound [C] which reacts with thionyl chloride to produce [D]. When the compound [A] is heated with potassium dichromate the product is acetic acid and malonic acid. The structure of compound [A] is :A. `CH_(3)-CH_(2)-overset(O)overset(||)C-CH_(2)COOH`B. `CH_(3)CH_(2)underset(OH)underset(|)CHCH_(2)COOH`C. `CH_(3)overset(O)overset(||)C"C"H_(2)CH_(2)COOH`D. `CH_(3)CH_(2)underset(OH)underset(|)CHCOOH`
An organic compound [A] is `C_(5)H_(8)O_(3).`On heating with soda lime, it gives [B]. The compound [B] reacts with HCN to give another compound [C] which reacts with thionyl chloride to produce [D]. When the compound [A] is heated with potassium dichromate the product is acetic acid and malonic acid. The compound [A] is aA. `alpha`-hydroxy acidB. `beta`-hydroxy esterC. `beta`-keto acidD. `beta`-keto ester.
Assign a suitable structure to `C_(6)H_(8)O_(2)` that can give iodoform test and white trubidity with Lucas reagent on heating.
An organic compound [A] is `C_(5)H_(8)O_(3).`On heating with soda lime, it gives [B]. The compound [B] reacts with HCN to give another compound [C] which reacts with thionyl chloride to produce [D]. When the compound [A] is heated with potassium dichromate the product is acetic acid and malonic acid. The IUPAC name of compound [B] is :A. Butan-2-eneB. Pentan-3-eneC. Pentanoic acidD. Ethanoic acid.
and find out the reagent `(A)` from the following :A. `BrCH=CHCH_3`B. `CH_2=CHCH_2 Br`C. `(CH_(2)-overset(Br)overset(|)(C)-CH_(3))`D. All
The decreasing order of ease of hydrolysis of the following esters is : (I) `MeCOOPh` (II) (III) (IV) .A. `(II) gt (I) gt (IV) gt (III)`B. `(I) gt (II) gt (III) gt (IV)`C. `(III) gt (IV) gt (I) gt (II)`D. `(IV) gt (III) gt (II) gt (I)`
Acid-catalysed estrification of a carboxylic acid is shown below. (i) What special name is given to this esterification reaction? (ii) Trace the position of `O^(18)` of benzoic acid in the products formed. (iii) Acid catalysed esterification is a substitution at the carbonyl carbon or at the oxygen of OH. Explain
Arrange the following in decreasing order of acid catalysed estrification: `CH_(3)CH_(2)COOH, (CH_(3))_(2)CHCOOH,(CH_(3))_(2)"CC"OOH`
Carboxylic acids having at least one `alpha`-hydrogen react with `Cl_(2)" or "Br_(2)` in the presnence of red phosphorus to give `alpha`-halo acids. The reaction is known as H.V.Z. reaction. The HVZ reaction is limited to the formation of `alpha`-chloro acid and `alpha`-bromo acid and it is sometimes difficult to carry out the reaction. Answer the following questions : Which of the following carboxylic acids will not give HVZ reaction ?A. `CH_(3)COOH`B. `CH_(3)-overset(CH_(3))overset(|)CH-COOH`C. `CH_(3)-CH_(2)-COOH`D. `CH_(3)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-COOH`
Assertion : Although fluorine is more electronegative than chlorine, p-chlorobenzoic acid is a stronger acid than p-fluorobenzoic acid. Reason : Due to mathcing size of 2p-orbitals of F and C, F has stronger +R effect than Cl.A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason are both incorrect.

Which carboxylic acid `(B) (N.E = 52 gm eq^-1)` loses `CO_2` when heated to give an acid `( C) N.E = 60 gm eq^(-1)` ?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment