Match the following species with the corresponding conjugate acid:

Species Conjugate acid
A.  NH3  1. CO32-
B. HCO3- 2. NH4+
C. H2O 3.H3O+
D. HSO4-  4. H2CO3
5. H2SO4

Codes

A B C D
1. 2 5 1 5
2. 2 4 3 5
3. 5 4 3 2
4. 4 5 3 2
Subtopic:  Acids & Bases - Definitions & Classification |
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Given below are two statements: 

Assertion (A): The increasing order or acidity of hydrogen halides is HF<HCI<HBr<HI.
Reason (R): While comparing acids formed by the elements belonging to the same group of the periodic table, H-A bond strength is a more important factor in determining the acidity of an acid than the polar nature of the bond.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Acids & Bases - Definitions & Classification |
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Acidity of BF3 can be explained on the basis of: 

1. Arrhenius concept

2. Bronsted Lowry concept 

3. Lewis concept

4. Bronsted Lowry as well as Lewis concept

Subtopic:  Acids & Bases - Definitions & Classification |
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