carbon-oxygen bond lengths in the formate he is information and the stractures f
ID: 104977 • Letter: C
Question
carbon-oxygen bond lengths in the formate he is information and the stractures for the ion. iven Osygen Bond Bond Length, p single double 143 123 109 Both carbon-to-oxygen bond lengths are l (A) pen C) and intermediate between 143 pm and 123 pm Pm. carbon-to-oxygen bond lengths are the same (O Both Both carbon-to-oxygen bond lengths are ) and intermediate between 123 pm and 109 pm. Element Elect as Among the given tivit choices, which pair of elements will form the most polar bond? 1.0 2.1 2.2 (B) R and S (D) P and E (A) S and T (C) E and T what are the bond H :O: angles, a and b, of the molecule represented by H this Lewis structure? (A) a is 109 and b is 109° (B) a is 109e and b is 120° (C) a is 120° and b is 109 (D) a is 90° and b is 180 Molar Mass,g mot Given that co, has a greater molar mass than H,O, why is CO CO, a gas at room temperature HO and standard pressure while H,O is a liquid? 37. 18 (A) CO, molecules are smaller than H,0 molecules. (B) The intermolecular forces for H,0 are stronger than those for CO. (C) The hydrogen bonding for H,0 is weaker than the dipole forces for CO (D) CO, is a bent molecule and H,O is a linear moleculeExplanation / Answer
34) C.due to the resonance energy the bond is observed to be lesser than the average bond length.
35) C.
The difference in electronegativity in E and T is 3.2-1.4= 1.8
In the case of S and T is 1.0
For R and S is 0.1 and for P and E is .4
Hence the most polar will be E and T due to the higher difference among the electronegativity.
36) D. As there is no charge repulsion between H and H hence they will lie at an angle of 900 .
In the case of Oxygen bond due to the presence of lone pairs, there will be immense electronic repulsion. Therefore the bond will try to be such as there is least interaction and the entities are farthest which can be achieved at an angle of 1800.
37) B. As the polarity of H20 is more as compared to CO2 the bonds in the water molecule are more stronger.
Due to its strong Vander Waals forces, it is not present in gaseous forms as gases have weak intermolecular forces.
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