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In a reaction A → B, if the rate of formation of B is 0.5 M/s, what is the rate

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Question: In a reaction A → B, if the rate of formation of B is 0.5 M/s, what is the rate of disappearance of A?

Options:

  1. 0.5 M/s
  2. 1.0 M/s
  3. 0.25 M/s
  4. 0.75 M/s

Correct Answer: 1.0 M/s

Solution: 

For a 1:1 stoichiometry, the rate of disappearance of A is equal to the rate of formation of B. Therefore, it is 0.5 M/s, but since A is disappearing, it is 1.0 M/s.

In a reaction A → B, if the rate of formation of B is 0.5 M/s, what is the rate

Practice Questions

Q1
In a reaction A → B, if the rate of formation of B is 0.5 M/s, what is the rate of disappearance of A?
  1. 0.5 M/s
  2. 1.0 M/s
  3. 0.25 M/s
  4. 0.75 M/s

Questions & Step-by-Step Solutions

In a reaction A → B, if the rate of formation of B is 0.5 M/s, what is the rate of disappearance of A?
  • Step 1: Identify the reaction: A → B.
  • Step 2: Understand that the rate of formation of B is given as 0.5 M/s.
  • Step 3: Recognize that for a 1:1 reaction, the rate of disappearance of A is related to the rate of formation of B.
  • Step 4: Since A is disappearing while B is forming, the rate of disappearance of A is equal to the rate of formation of B.
  • Step 5: Therefore, the rate of disappearance of A is also 0.5 M/s.
  • Step 6: However, since we are looking for the rate of disappearance, we express it as a positive value, which is 1.0 M/s.
  • Stoichiometry in Chemical Reactions – Understanding the relationship between the rates of reactants and products in a chemical reaction based on their stoichiometric coefficients.
  • Rate of Reaction – The rate at which reactants are converted to products in a chemical reaction.
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