how to titrate with these given substances (1 Viewer)

[2006hsc]

im not good with titrations...
can you tell me the procedure of titrating with these solutions anyone?

common solution of HCl of known concentration
unknown solution
phenolphthalein solution indicator


can sum1 tell me what goes in what?
eg. HCl goes into burette while 3 drops of the indicator goes with the unknown in the conical flask......right?

 

[airie]

First, measure the amount of acid and unknown solution before titration. Then add indicator to the unknown solution in the conical flask (I'm assuming it should be a base here ) which then turns pink. Then add acid to the unknown solution using the burette, drop by drop, until the mixture suddenly turns from pink to clear, and note down how much acid is used (this is calculated by looking at the amount of acid left in the burette) to neutralise the measured amount of unknown solution. Then you can work out its concentration as you already know that of the acid

 

[2006hsc]

First, measure the amount of acid and unknown solution before titration. Then add indicator to the unknown solution in the conical flask (I'm assuming it should be a base here ) which then turns pink. Then add acid to the unknown solution using the burette, drop by drop, until the mixture suddenly turns from pink to clear, and note down how much acid is used (this is calculated by looking at the amount of acid left in the burette) to neutralise the measured amount of unknown solution. Then you can work out its concentration as you already know that of the acid

awww thanks airie your a sweetheart

 

[Forbidden.]

awww thanks airie your a sweetheart

yeh she's taken ..

use the equation

m_av_a=m_bv_b

Where

m_a is molarity of the acid
v_a is the volume of the acid
m_b is molarity of the base
v_b is the volume of the acid