Coursework Help: Magnesium Ribbon & Acids Reaction Order & Mechanism

  • Thread starter Thread starter faaz
  • Start date Start date
  • Tags Tags
    Coursework
Click For Summary
SUMMARY

The discussion focuses on determining the reaction order and mechanism of the reaction between magnesium ribbon and acids, specifically ethanoic acid and hydrochloric acid, for Edexcel Nuffield Chemistry A-Level coursework. The user observed a zero-order reaction from their concentration versus time graphs, despite expecting a second-order reaction for hydrochloric acid. This discrepancy raises questions about the experimental setup and data interpretation, particularly regarding the measurement of hydrogen evolution rates against acid concentration.

PREREQUISITES
  • Understanding of reaction kinetics and order of reactions
  • Familiarity with acid-base reactions, specifically with magnesium and hydrochloric acid
  • Knowledge of graph interpretation in chemical kinetics
  • Experience with experimental design in chemistry coursework
NEXT STEPS
  • Research the principles of reaction order and how to determine it experimentally
  • Study the mechanism of magnesium reactions with strong versus weak acids
  • Learn about measuring hydrogen evolution rates in acid-metal reactions
  • Investigate common pitfalls in interpreting concentration versus time graphs in kinetics
USEFUL FOR

Chemistry students, particularly those studying A-Level coursework, educators teaching reaction kinetics, and anyone interested in the experimental analysis of acid-metal reactions.

faaz
Messages
1
Reaction score
0
hey, m doing edexcel nuffield chemistry a-level
aim of my coursework is
Aim:
To find the order and mechanism of the reaction between magnesium ribbon and acids, and see how it depends on the strong and weak acids at room temperature.

i used ethanoic acid and hydrchloric acid, n from da graphs i obtained (concentration against time) its givin me straight line which is zero order.
where as its meant to be 2nd order, for HCL. So now i don't have any reason to xplain this.
Some one please give me an idea wot i could say, why i got these results? i hve to give in my wrk tomorow. please help
 
Physics news on Phys.org
Please be more specific regarding what you have done... I don't understand what you are measuring in your graphs. Concentration against time? Concentration of what? Did you measure the rate of initial, steady state hydrogen evolution vs. acid concentration for identically shaped pieces of magnesium ribbon?
 

Similar threads

Nitric acid and magnesium reaction, slow gas production
  • · Replies 1 ·
Replies
1
Views
11K
Chemistry Help Needed: Solving Acid & Base Reactions Questions!
  • · Replies 8 ·
Replies
8
Views
4K
Synthesis of Fluorescents AuNCs
  • · Replies 1 ·
Replies
1
Views
2K
Chemically regenerating my auto's catalytic converter?
  • · Replies 19 ·
Replies
19
Views
9K
Arrhenius equations; A2 Chemistry coursework
  • · Replies 3 ·
Replies
3
Views
11K
Is Mixing Table Salt and Water Enough to Create Hydrochloric Acid?
  • · Replies 8 ·
Replies
8
Views
3K
How Do You Solve Complex Chemistry Titration and Reaction Problems?
  • · Replies 5 ·
Replies
5
Views
9K