• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

I am to determine the concentration of limewater solution by Titration method.

Extracts from this document...

Introduction

Chemistry coursework Planning work Determine the concentration of a lime water solution BY Nwabuisi Okonta Chemistry coursework Determine the concentration of a lime water solution Planning I am provided with 250cm3 of limewater which has been made such that it contains approximately 1gdm3 of calcium. Also available is hydrochloric acid which contains exactly 2.00 mol dm-3 I am to determine the concentration of limewater solution by Titration method. Apparatus used is as follows: * 50ml burette * 100ml conical flask * 100ml beaker * white tiles * resort tiles * safety goggles * pipette Chemicals used are: * 250cm3 of limewater which contains approximately 1g dm-3of CaOH * HCL solution (2.00 mol dm-3) ...read more.

Middle

You have already been told that the acid with which you have been supplied is too concentrated in its present form, so if it was used directly in a titration a ridiculously small volume would need to be added, maybe as little as 0.1 cm3 (which would be far too difficult to measure accurately). The quantities and concentration I was told that the Ca(OH)2 solution contains about 1gm-3 Molar mass of CaOH = ( Ca=40, O=16, H=1) ?moar mass CaOH=40+ (1�2+16�2) = 74g the concentration of the solution = 1 74 = 0.0135 mol dm-3 As I said above I should try to make the concentration of the acid about twice as much as this, i.e. ...read more.

Conclusion

Next add distilled water and make up "to the mark. Ensure then that the flask is upended several times to ensure thorough mixing. This dilution of 3.4 cm3 into 250 cm3 will give us an acid which has a new concentration of: (3.4/250) x 2.00 = 0.027 mol dm-3. Next I need to use a pipette to transfer 10.0 cm3 of the calcium hydroxide into a conical flask, add 3drops of a suitable indicator (methyl orange) then I will carry out the titration with the diluted acid. You should find that you obtain a titration reading of about 10 cm3, but you will need to work accurately and obtain at least three consistent readings. The final step is of course to calculate the precise concentration of the calcium hydroxide solution ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Aqueous Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Aqueous Chemistry essays

  1. Find the concentration of limewater solution Titration

    You will need to wash out the 5cm� pipette with de-ionised water by by using the pipette filler. You will need to place the pipette filler on the pipette and squeeze the air out with the bottom valve. And then rinse out the water. Repeat this process using the HCl.

  2. Determine the concentration of lime water.

    I have the choice of what apparatus I use and also the design of my own experiment. I am provided with the following: Indicator (Methyl orange) 250cm3 of limewater (which contains approximately 1g dm of calcium hydroxide) Hydrochloric acid (concentration of 2.00 mol dm ), which is too concentrated and needs to be diluted.

  1. To determine the concentration of Limewater solution

    This will mean that one unit of HCl (1cm3) will need 99cm3 of distilled water added to it (it is 99 and not 100 because if you added the 1cm3 of HCl to 100cm3 of water, you will have 101cm3 in total).

  2. determining the concentration of a limewater solution

    I then measured 3.00cm� of hydrochloric acid into a 250.00cm� volumetric flask using a 1.00cm� glass pipette 3 times. I then filled up the flask to the 250.00cm� line with distilled water so that I had 250.00cm� of dilute hydrochloric acid solution.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work