15 Questions
What is the key factor that determines whether a molecule is polar or non-polar?
The symmetry of the molecular structure
What is the range of electronegativity difference values for polar molecules?
0.5 - 1.9
Which of the following statements is true for non-polar molecules?
Their dipole moments cancel out due to symmetry
What is the purpose of the electronegativity value?
To indicate the relative tendency of an atom to attract electrons
What is the quantitative measure of the polarity of a bond called?
Dipole moment
Which type of catalyst is used in the decomposition of hydrogen peroxide?
Manganese(IV) oxide
What is the catalyst used in the nitration of benzene with concentrated sulfuric acid?
Vanadium(V) oxide
In which chemical process is iron used as a catalyst for its reaction?
Conversion of SO2 into SO3
Which catalyst is utilized in the hydrogenation of a C=C double bond?
Nickel
What type of catalyst is employed in the manufacture of ammonia by the Haber Process?
Iron
According to collision theory, which of the following factors does NOT directly influence the rate of a chemical reaction?
The volume of the reaction vessel
If the concentration of a reactant is doubled, how will the rate of the reaction be affected, assuming all other factors remain constant?
The rate will increase by a factor of 2
If the temperature of a reaction is increased, which of the following statements best explains the effect on the reaction rate?
The reaction rate increases because the particles have more kinetic energy and collide more frequently
For a solid reactant, which of the following changes would result in the greatest increase in reaction rate?
Decreasing the particle size of the solid
A catalyst is added to a reaction. Which of the following statements best describes the role of the catalyst?
It provides an alternative reaction pathway with lower activation energy
Test your knowledge about the polarity of chemical bonds in molecules. Learn about terms like polar, non-polar, asymmetric molecules, dipole moments, and electronegativity differences.
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