Which is the faster reaction?
Correct answer: C. AgNO3 + NaCI
- A. CH4 + Cl2
- B. CH3COOH + C2H5OH
- C. AgNO3 + NaCI
- D. C + 2H2
Explanation
Option C, "AgNO3 + NaCl," is the fastest reaction among the given options. This is because it involves a direct combination of two ionic compounds, silver nitrate (AgNO3) and sodium chloride (NaCl), resulting in the formation of silver chloride (AgCl) and sodium nitrate (NaNO3). This reaction proceeds rapidly due to the strong electrostatic attraction between the positively charged silver ions (Ag+) and the negatively charged chloride ions (Cl-), leading to a high reaction rate. In contrast, the other options involve covalent compounds or more complex reactions, which typically have higher activation energies and may proceed at a slower rate compared to the straightforward ionic reaction in option C.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
Practise Reaction Kinetics
573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Reaction Kinetics questions
Addition of catalyst during a chemical reaction alters:
A first order reaction has k = 102 Sec-1, the time required to convert 20 g of it to 5 g will be:
For a hypothetical reaction: x2 + y2 → 2xy, the proposed mechanism is: (i) x2 → x + x (Fast) (ii) x + y2 → xy + y (slow) (iii) x + y → xy (Fast) The order of reaction will be:
Some reactions are slower than others because they:
100 g of a substance decays slower than 50 g of the same substance. The order of decay follows kinetics:
For 2nd order reaction, changes with time: