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

Finding the Concentration of Limewater in a Titration Using Hydrochloric Acid as a reagent

Extracts from this document...

Introduction

Finding the Concentration of Limewater in a Titration Using Hydrochloric Acid as a reagent Aim: The aim of this experiment is it to find the concentration of Limewater (g dm-3) in a titration experiment using hydrochloric acid of concentration exactly 2.00 mol dm-3 as a reagent. Equipment: I will need a burette, 25ml pipette, pipette filler, white tile, teat pipette, clamp stand, boss head, clamp, limewater, phenolphthalein indicator, hydrochloric acid, volumetric flask, funnel, distilled water, conical flasks, safety gear and a calculator. Equation: 2HCl (aq) + Ca(OH)2 (aq) --> 2H20(l) + CaCl2(aq) Quantity and concentration of reagent used: 100ml & 2.00 mol dm-3 HCL Method: First things first, Lab coats and Goggles must be worn at all times. This safety rule should not be disobeyed due to fact we are using hazardous chemicals their hazards must be taken into account. The chemicals that we will use are limewater, hydrochloric acid and Phenolphthalein indicator. The hazards are as follows: Hydrochloric acid - Very corrosive, irritant. ...read more.

Middle

(The need for the phenolphthalein indicator is to show the user when a neutralization reaction has occurred as that is the moment when the solution is no longer alkaline and it below PH 8.4) Next, set up the washed & clean burette on the clamp stand and add the dilute HCL into the top of the burette with a funnel, making sure the tap is closed. Fill up to the 0.00ml mark (making sure that the level of the 0.00ml line is at the bottom of the meniscus). Then place the conical flask of calcium hydroxide under the burette and the white tile under the flask. Begin to let the acid pour slowly into the calcium hydroxide and stir the conical flask slowly. When the solution starts to loose its colour slow the rate of the acid more and the moment the solution looses all colour stop, this is the end point. The solution should turn from pink to colourless. ...read more.

Conclusion

= Numb of Mol (N) Volume (V) N = C x V N = 0.20 mol dm-3 x 3.60 cm3 N = 0.20 mol dm-3 x 3.6x10-3 N = 7.20 x 10 - 4 moles Equation: 2HCl (aq) + Ca(OH)2 (aq) --> 2H20(l) + CaCl2(aq) The number of mol. of Ca(OH)2: HCL : Ca(OH)2 2 : 1 7.2 x 10 - 4 moles : 3.60 x 10 - 4 moles Concentration of the limewater in mol dm-3: Concentration (C) = Numb of Mol (N) Volume (V) N = 3.60 x 10 - 4 moles V = 25 cm3 = 0.025 dm-3 C = 3.60 x 10 - 4 moles 0.025 dm-3 C = 0.0144 mol dm-3 = 0.01 mol dm-3 Average: Average = 3.70 cm3 + 3.50 cm3 + 3.60 cm3 3 Average = 3.60 cm3 Concentration of the limewater in g dm-3: To calculate the concentration of the limewater in g dm-3 we multiply the concentration of the limewater in mol dm-3 by the relative molecular mass of limewater. C = 0.0144 mol dm-3 x 74.1 = 1.06704 g dm-3 = 1.07 g dm-3 Rohan Malhotra Chemistry-Titration Mrs Newnham ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Organic 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 AS and A Level Organic Chemistry essays

  1. Free essay

    Experiment to determine the order of the reaction of Iodine with Acetone by using ...

    All the molecules contained within are colliding constantly. By increasing the amount of one or more of the reactants it causes these collisions to happen more often, increasing the reaction rate (Figure 1.1). Temperature Temperature usually has a major effect on the rate of a chemical reaction. Molecules at a higher temperature have more thermal energy.

  2. The aim of this experiment is to produce Aspirin. This is an estrification in ...

    Method Once the solution was prepared the next procedure conducted was the titration. In this method measurements were taken carefully in order to accurately obtain precise results in the titration. Preparing the burette The burette was washed with distilled water; checks were made so that there were no leaks.

  1. Comprehensive and Detailed Chemistry notes

    flame resistant with additives, water resistant rigid pipes and gutters, flexible raincoats and shower curtains styrene ethenylbenzene polystyrene transparent, due to few crystals, when gas added forms foam compact disc cases, heat insulation, floats 2. SOME SCIENTISTS RESEARCH THE EXTRACTION OF MATERIALS FROM BIOMASS TO REDUCE OUR DEPENDENCE ON FOSSIL

  2. investigating the amount of ascorbic acid present in fruit

    Use distilled water to help take out the solid bits of KI that may be still in the weighing boat and spatula. 5. Mix the distilled water with the solid KI, and then the 4% KI solution is made.

  1. Aim: To determine how the concentration of each species in a reaction affects the ...

    Again, this obviously affected the both the reliability and accuracy of his experiment. Preliminary test conclusions The preliminary test has enabled the following conclusions to be reached about the experiment, which will be utilised when I carry out the final experiment, in order to improve accuracy: * Need to change

  2. Chemistry Investigation - How does chain length affect: ∆Hcè for alcohols?

    This step must be repeated for all alcohols that are to be tested. * The distance between the base of the suspended copper pot and the wick of the spirit burner should be measured and should remain constant for all repeats.

  1. Finding the concentration of an acid sample

    I will have to make it my self. However I must first work out how much of the Na2CO3 I will need to dissolve into distilled water. As we have been told that the concentration of the Sulphuric acid is between 0.05 and 0.15 mol dm-3.

  2. Determine the Concentration of Limewater Solution

    is the following: RMM of Ca = 40.1 RMM of O2 = 32.0 RMM of H2 = 2.0 = 40.1+32.0+2.0 = 74.1 Concentration in mol dm-3 = concentration in g dm-3 / RMM = 1/74 = 0.0135 mol dm-3 of Calcium Hydroxide used in this equation.

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