Titration Help: Standardize HCl Using Oxalic Acid & CaCOH Solution

  • Thread starter Thread starter Dynamis
  • Start date Start date
  • Tags Tags
    Titration
AI Thread Summary
To prepare a standard solution of oxalic acid at approximately 0.05M, calculate the required mass using the formula: mass = molarity × volume × molar mass. For a 250 ml volumetric flask, this involves determining the moles needed and converting it to grams. Oxalic acid, being a diprotic acid, will require half the amount of moles to neutralize the base in the titration process. The solution of CaCOH can then be analyzed using this standard solution to find its concentration, which will subsequently allow for the standardization of the HCl solution. During the lab, attention to detail is crucial, particularly in measuring and transferring solutions, as inaccuracies can affect results. Despite some challenges with technique, successful completion of the calculations indicates a solid understanding of the process.
Dynamis
Messages
12
Reaction score
0
Question:
Prepare a standard solution of oxalic acid (approx. 0.05M). Use it to find the conc of the given solution of CaCOH. Use this to standardize the given solution of HCl.

So basically I am suppose to do this as an inclass lab. I will be given a 250 ml volumetric flask where i will have to mix water and a calculated amount of oxalic acid in solid form in it. How will I do the calculations and how will I approach this lab. I'm so lost. Any help would great, thanks in advance!
 
Chemistry news on Phys.org
Any textbook on analytical chemistry covers alkalimetric titration, together with precise recipes and how-tos.
 
Dynamis said:
Question:
Prepare a standard solution of oxalic acid (approx. 0.05M). Use it to find the conc of the given solution of CaCOH. Use this to standardize the given solution of HCl.

So basically I am suppose to do this as an inclass lab. I will be given a 250 ml volumetric flask where i will have to mix water and a calculated amount of oxalic acid in solid form in it. How will I do the calculations and how will I approach this lab. I'm so lost. Any help would great, thanks in advance!

keep in mind that oxalic acid is a diprotic acid, so it will take half the amount of oxalic acid (moles) to neutralize all of the base.
 
Thanks for the response guys, I did pretty good on this inclass lab exam today, as far as the calculations went, but the actual titrating and stuff was a little weird as I overfilled my volumetric flask and some other weird stuff. Overall I did alright, but thanks anyway for the help.
 
I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity? I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by...
I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
I'm trying to find a cheap DIY method to etch holes of various shapes through 0.3mm Aluminium sheet using 5-10% Sodium Hydroxide. The idea is to apply a resist to the Aluminium then selectively ablate it off using a diode laser cutter and then dissolve away the Aluminium using Sodium Hydroxide. By cheap I mean resists costing say £20 in small quantities. The Internet has suggested various resists to try including... Enamel paint (only survived seconds in the NaOH!) Acrylic paint (only...

Similar threads

Back
Top