Dynamic Equilibrium - Experimental Analysis

The video tutorial discusses a series of experiments involving different concentrations of reactants and products, specifically hydrogen, iron, and hydrogen iodide. It explains how equilibrium concentrations are determined and substituted into expressions, resulting in a constant value of approximately 49. The tutorial also covers the significance of stoichiometric coefficients in balanced chemical equations, highlighting the power of concentration for reactants and products.

What is observed about the concentrations of reactants and products over time in the experiments?

• They decrease to zero.

• They increase indefinitely.

• They reach a constant value.

• They fluctuate randomly.

What term is used to describe the constant concentrations of reactants and products at equilibrium?

• Initial concentrations

• Transient concentrations

• Final concentrations

• Equilibrium concentrations

What constant value was obtained in all the experiments when equilibrium concentrations were used in the expression?

• 25

• 49

• 75

• 100

In a balanced chemical equation, what does the power of concentration for reactants and products refer to?

• The initial concentration

• The stoichiometric coefficient

• The reaction rate

• The final concentration

What is the stoichiometric coefficient for hydrogen iodide in the balanced chemical equation discussed?

• 1

• 2

• 3

• 4