BIOLOGY!

[larina]

salam.
i want to know that what is the buffer solution for pH, it will be a great pleasure if anyone can tell me

 

[hassam]

Buffer solutions act as neutralizing agents that contain both positive and negative ions of a weak acid. Thus, if a base such as NaOH is added to the solution, the positive H+ ions will react with the negative (OH-) ions to neutralize the solution. Similarly, if an acid is added to the buffer, the negative ions (such as OH- or C2H3O2-) will react with the hydronium ions to neutralize the solution.
hope that helps....

 

[larina]

that really helped. thanks hassam

 

[XPFMember]

Waalaikumassalam!!
Aha so now i will help u
I guess what hassam said is smthng different from what i know!!
So i will give u what i feel is correct...
A buffer solution has the property that the pH of the solution changes very little when a small amount of strong acid or base is added to it.Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications.
May be hassam is right but still...

 

[larina]

thank u math angel.
so, it is basically keeping the pH of the solution constant!

 

[XPFMember]

yup that's what i know...since 2-3 years

 

[XPFMember]

and yeah one more thing they are of 2 types...acidic buffers and basic buffers whatever they are according to their pH they will help maintaining a constant pH throughout

 

[larina]

well thanks again
and i never took this in IGCSE!

 

[XPFMember]

actually we took it in the enzymes chapter...there was an experiment to check the effect of pH in that we added a buffer solution so that a constant pH is maintained

 

[hassam]

hey larina and maths angel how many chapters u have studied in skool in AS bio ? (i uess u both r in as level

 

[XPFMember]

yes i hva done cell structure,cell membrane and transport,biological molecules...and just started nuclear division!!

 

[larina]

i have done cell structures, biological molecules, enzymes, membranes and transport, genetic coontrol of protein structure and function, and have just started cell division like math angel
what about u hassam?

 

[hassam]

ya studied cell ,molecules, membrane and transport,enzymes and nuclear division now i have 2 start dna wala chapter

 

[larina]

i did DNA wala chap before nuclear division

 

[XPFMember]

so that means i am the one one done with the least no. of chapters i am on the 4 th and u all finished almost 5!!

 

[larina]

dont worry...your teacher will cover the syllabus in time InshaAllah.

 

[hassam]

yea inshallah

 

[XPFMember]

InshAllah...hope so everything goes well...Aameen!