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Standard X

Chemistry

Carboxylic Acids

The correct s...

Question

The correct systematic name of the above compound is:

2-Acetoxyethanoic acid

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2-Methoxycarbonylpropanoic acid

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3-Methoxy-3-oxopropanoic acid

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2-Methoxyformlyacetic acid

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Solution

The correct option is C 3-Methoxy-3-oxopropanoic acid
Two functional group are present ester & carboxylic acid.
carboxylic acids are prefered over ester while numbering thus the correct numbering to the parent chain is
Prefix for ester: alkoxycarbonyl
suffix for carboxylic acid : oic acid

Hence, correct IUPAC name is
3-Methoxy-3-oxopropanoic acid

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Similar questions

Q. The correct increasing order of the acid strength of benzoic acid (I),

4 -

nitrobenzoic acid (II),

3, 4 -

dinitro benzoic acid (III) and

4

- methoxy benzoic acid (IV) is:

Arrange the following compounds in increasing order of their property as indicated :

Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN).

$C H_{3} C H_{2} C H (B r) C O O H, C H_{3} C H (B r) C H_{2} C O O H, (C H_{3})_{2} C H C O O H, C H_{3} C H_{2} C H_{2} C O O H {(a c i d s t r e n g t h)}$

Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).

Q. Give the order of acidic character of the following:
i. a.

p

-Nitrobenzoic acid
b. 2, 4-Dinitrobenzoic acid
c. 2, 4, 6-Trimethylbenzoic acid
d. 2, 3, 4-Trinitrobenzoic acid
ii. a.

P h_{3} C H

P h_{2} C H_{2}

P h C H_{3}

iii. 2, 6-Di-tert-butyl phenol is a much weaker acid than phenol.
iv. a. Phenol
b. Cyclohexanol
c.

p

-Bromophenol
d.

p

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vi. a. Benzoic acid
b.

p

-tert-Butylbenzoic acid
c.

p

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Q. Decreasing order of acidity of p-methoxy benzoic acid (A), p-nitrobenzoic acid (B) and benzoic acid (C) is :

Q. Arrange the following in decreasing order of acidic strength.
I. Benzoic acid
II. 4-nitrobenzoic acid
III. 3, 4-dinitrobenzoic acid
IV. 4-methoxy benzoic acid

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