How to determine if the mixing of two solution would result in buffer solution?

  • Thread starter Thread starter ada15
  • Start date Start date
  • Tags Tags
    Buffer Mixing
AI Thread Summary
To determine if a mixture results in a buffer solution, it is essential to identify the presence of a conjugate acid-base pair. The discussion evaluates five mixtures, concluding that only the fifth mixture, 0.10 M hydrochloric acid and 0.20 M ammonia, creates a buffer. The other mixtures fail to meet the criteria for buffering, as they do not contain both a weak acid and its conjugate base or vice versa. The molarity of the solutions plays a crucial role in achieving the necessary balance for buffering. Understanding these principles is vital for exam preparation and effective problem-solving in chemistry.
ada15
Messages
24
Reaction score
0

Homework Statement


Which of the following mixtures would result in buffered solutions whn 1.0 L of each of the two solutions are mixed?

(i) 0.10 M sodium chloride and 0.10 M sodium nitrite
(ii) 0.10 M sodium chloride and 0.10 M ammonium chloride
(iii) 0.10 M hydrochloric acid and 0.10 M ammonia
(iv) 0.20 M hydrochoric acid and 0.10 M ammonia
(v) 0.10 M hydrochloric acid and 0.20 M ammonia


Homework Equations



All I know is that there are 6 methods by which we can buffer solutions:
(i) weak acid and strong base
(ii) weak base ans strong acid
(iii) weak and its salt
(iv) weak base and its salt
(v) salt of weak acid and strong acid
(vi) salt of weak base and strong base


The Attempt at a Solution



but when I use the above knowledge, the answer are coming different ... the thing I'm not getting is how the molarity of each of the solutions would have an effect.

I have the answers for the above parts but I don't know the reasoning ...

(i) No
(ii) No
(iii) No
(iv) No
(v) Yes


Can anyone please please immediately and somehow explain me the reasoning ... I'll be really thankful ...
 
Physics news on Phys.org
Buffer must contain conjugated pair of acid/base. Preparation methods are a consequence of this.

Borek
 
Last edited by a moderator:
Too late I presume... But to find the answers to your questions you should follow not my links, but information about what the buffer is. Take a look at all solutions defined - IF they contain both acid and conjugated base (especially in comparable quantities) you have a buffer solution.

Borek
 
Last edited by a moderator:

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

Chemistry Understanding how to calculate pH of a buffer solution
Replies
2
Views
1K
Chemistry Are there typos in this snippet causing confusion?
Replies
2
Views
1K
Creating a buffer out of 0.100M solutions
Replies
1
Views
2K
Buffer solution preparation
Replies
11
Views
3K
Chemistry How to take into account autoprotolysis in weak base solution?
Replies
8
Views
2K
Which of the following combinations would act as buffered solutions
Replies
5
Views
5K
Buffer Solutions: How to Create and Maintain Optimal pH Levels?
Replies
7
Views
3K
Buffer Solution Calculation Example
Replies
16
Views
3K
Finding minimum concentrations in a buffer solution
Replies
3
Views
7K
Finding the pH of a buffer solution when a strong acid is added
Replies
1
Views
5K

Hot Threads

Recent Insights

Back
Top