Alerts Wishlist Cart

In a first-order reaction, if the concentration of reactant decreases from 0.8 M

Practice Questions

Q1
In a first-order reaction, if the concentration of reactant decreases from 0.8 M to 0.2 M in 20 minutes, what is the rate constant? (2022)
  1. 0.0347 min⁻¹
  2. 0.0693 min⁻¹
  3. 0.1 min⁻¹
  4. 0.2 min⁻¹

Questions & Step-by-Step Solutions

In a first-order reaction, if the concentration of reactant decreases from 0.8 M to 0.2 M in 20 minutes, what is the rate constant? (2022)
  • Step 1: Identify the initial concentration of the reactant, A₀, which is 0.8 M.
  • Step 2: Identify the final concentration of the reactant, A, which is 0.2 M.
  • Step 3: Identify the time period, t, which is 20 minutes.
  • Step 4: Use the first-order rate equation: k = (ln[A₀] - ln[A]) / t.
  • Step 5: Calculate ln(0.8) and ln(0.2).
  • Step 6: Substitute the values into the equation: k = (ln(0.8) - ln(0.2)) / 20.
  • Step 7: Perform the calculation to find k.
No concepts available.
Biology (School & UG)
Biology (School & UG)
Chemistry (School & UG)
Chemistry (School & UG)
Civil Engineering
Civil Engineering
Commerce & Accountancy
Commerce & Accountancy
Computer Science & IT
Computer Science & IT
Current Affairs & GK
Current Affairs & GK
Data Structures & Algorithms
Data Structures & Algorithms
eBooks
eBooks
Electrical & Electronics Engineering
Electrical & Electronics Engineering
English (School)
English (School)
General Aptitude
General Aptitude
General Knowledge
General Knowledge
General Knowledge & Current Affairs
General Knowledge & Current Affairs
Languages & Literature
Languages & Literature
Law & Legal Studies
Law & Legal Studies
Major Competitive Exams
Major Competitive Exams
Mathematics (School)
Mathematics (School)
Mechanical Engineering
Mechanical Engineering
Medical Science
Medical Science
Physics (School & Undergraduate)
Physics (School & Undergraduate)
Quantitative Aptitude & Reasoning
Quantitative Aptitude & Reasoning
Social Science (School)
Social Science (School)
Technical
Technical
Verbal and Reasoning
Verbal and Reasoning
Vocational & Skill Development
Vocational & Skill Development
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely