NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Select correct statements(s):
Options
- AAcidic strength of HBr > HCl but reverse is true for their reducing property
- BBasic strength of PH 3 > AsH 3 but reverse is true for their bond angle
- CDipole moment of CH 3 Cl > CH 3 F but reverse is true for their H C ^ H bond angle
- DK a 1 of fumaric acid is higher than maleic acid but reverse is true for their K a 2
Correct answer
C. Dipole moment of CH 3 Cl > CH 3 F but reverse is true for their H C ^ H bond angle
Step-by-step solution
(a) Acidic sterngth of HBr > HCl and their reducing proeprties are also in same order. (b) Basic strength of PH 3 > AsH 3 , their bond angles are also in same order (c) θ 2 > θ 1 because bond pair in C-F is held more close to F atom than bond pair in C-Cl bond. B.P - B.P repulsion less in CH 3 F i.e. H C ^ H bond angle is more. (d) K a 1 of maleic acid is higher than K a 1 of fumaric acid but reverse is true for their K a 2 . In maleic acid after loosing H + ion intramolecular hydrogen bonding taking place so, H +