I am about to get geared up to do soap titrations and need some clarification with the formula posted at the CBT.
I am going to make the solution using muriatic acid thats label states it is 31.45%.
Whomever wrote the article states this;
So which is the right formula? It is probably obvious but not for this guy...
I am assuming that my formula should be;
X= 36.5/31.45 ?
Which equals 1.161 ml of acid per litre of water?
Did I get it right?
That sounds right. But to improve accuracy, I would go the stock solution route that GirlMark describes further down.
Spot on Jon.
Are you still using this formula?
I have HCl that is 32%. Kinda hard to measure 1.61ml unless I find the weight of it. I have an extremely accurate digital scale.
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To make a .01N HCl solution using your 32% HCl, you would use 1.14g of your acid per liter of total solution.
Molar mass of HCl / purity x Normality of solution being made.
36.5/.32 x .01 = 1.140625g
I have a very accurate 5ml pipette that made the measurement not too bad when making the stock solution. I really didnt have enough confidence in the solution though so I ended up just buying a ready made one HERE, it was cheap and at my door in 2 days.
HI there all.... To make the HCL solution... is it 1,14g in 1 liter of water or how ?
please, can someone help me, i'm making biodiesel in brazil, i have 30% hidrochloric acid, i need to make 0.01n hidrochloric acid, how much grams of 30% hidrochloric acid for a liter of water?
thank you roberto
Dacosta; Do you have a density for your 30% hydrochloric acid?
Prolabscientific is up the street from my place and to get 0.01N HCL required a special order according to their chemist and a gallon would have cost $37 IIRC
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