Titration: Getting Molarity of orginal concentrated sol, from Molarity of dilute? (1 Viewer)

[sointoyourself]

I can work out the Molarity of dilute but how do you get the orginal concentration?
25ml of sulfuric acid from a car battery was accurately diluted to 500ml. 25ml of the diluted solution was titrated with 0.206 mol/L sodium hydroxide. It required 38.8 ml. Calculate the Molarity of the original battery acid and it's concentration in grams per litre. If 50ml of this acid were spilt on the bench how much an hydrous sodium carbonate would be needed to neutralise it?

 

[sointoyourself]

Note only the first part and the answer is 3.20mol/L

 

[umm what]

What are we supposed to know about titration? I am really good at calculating the molarity and volume shit, what else?

 

[sointoyourself]

Oh wait I figured it out it's just C1V1 = C2V2
Which is what I tried at the start but made a mistake! Ugh.

 

[sointoyourself]

What are we supposed to know about titration? I am really good at calculating the molarity and volume shit, what else?

Go through ur syllabus, past questions and ask ur teacher I can't list every possible way they'd pose the question but it's just variations on that idea, also knowing equipment.