he carbon-oxygen bond lengths i esen his infoermation and the structaes for eho
ID: 104980 • Letter: H
Question
he carbon-oxygen bond lengths i esen his infoermation and the structaes for eho Bond Bond Laength, pa triple 1- (A) Both carbon-to oxygen bond ) Both cartbon-8o-oxygen bond lengths ar123 pm lengths are 143 pm Reth carbon-10-oxygen bond lengths are the same ermediate between 143 pm and 123 pm, Both carbon-to-oxygen bond lengths are the and intermediate between 123 pm and 109 pm. same ElementElectronerativity 5 Among the given choices, which pair of elements will form the most polar bond? 1.4 2.1 2.2 (A) Sand T (CO E and T (B) R and S (D) P and E H :O: 1 36 What are the bond angles, a and b, of the molecule represented by this Lewis structure? 78-H (A) a is 109" and b is 109 (B) a is 109° and b is 120 (C) a is 120° and b is 109 (D) a is 90° and bis 180 37. Given that Co, has a greater Molar Mass gmot molar mass than HO, why isCO CO, a gas at room temperature HO and standard pressure while H,O is a liquid? 18 (A) CO, molecules are smaller than HO molecules. (B) The intermolecular forces for H,0 are stronger than those for C0, (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 molecule.Explanation / Answer
34) answer is option C. This is because, the given structure is of a resonating molecule. In such molecules the bond length is in between carbon-carbon double and single bond
35) answer is option C, as electronegativity difference between combining atoms is high.
36) option B is correct
37) opyion B is correct as water has strong intermolecular hydrogen bonding
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