Regarding polarity and molecular geometry, it is correct to state that acetylene molecules are

Chemistry

To solve this question, let's analyze the molecular structure of acetylene and determine its polarity and molecular geometry.

1. **Molecular Structure of Acetylene**: The chemical formula of acetylene is C2H2. Each carbon atom (C) is bonded to another carbon atom by a triple bond and to a hydrogen atom (H) by a single bond.

2. **Molecular Geometry**: The triple bond between the carbon atoms consists of one sigma (σ) bond and two pi (π) bonds. The pi bonds prevent the rotation of the carbon atoms around the bond, maintaining a linear geometry. Therefore, the hydrogen atoms and the carbon atoms are aligned in a straight line. This gives the molecule a linear geometry.

3. **Polarity**: To determine polarity, we need to consider the electronegativity difference between the atoms and the molecule's symmetry. The carbon atoms have the same electronegativity, and the C-H bond has a relatively small electronegativity difference, which could lead to partial polarity. However, due to the linear symmetry of the molecule, any partial polarity in the C-H bonds is canceled out by the molecule's symmetry. As a result, the molecule as a whole is nonpolar, as there is no permanent molecular dipole.

Therefore, the correct answer is:
c) nonpolar and linear

Question about Properties of Organic Compounds: Solubility of Organic Compounds

Subject Chemistry

Chemistry

Source UESPI

UESPI

Topic Properties of Organic Compounds: Solubility of Organic Compounds

Properties of Organic Compounds: Solubility of Organic Compounds

Difficulty Easy

Easy

(UESPI 2010) - Question Easy of Chemistry