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

Titration experiment. Standardization of hydrochloric acid using sodium carbonate.

Extracts from this document...

Introduction

Name : AMirul SYafiq Title : Standardization of hydrochloric acid using sodium carbonate. Variables : a) dependant : Volume of hydrochloric acid. b) independant : The colour of the solution. Results : 1) Preparation of the dilute HCl. a) Rough molarities:11M b) Volume in the measuring cylinder : 2.0 + 0.1cm³ c) Volume in the volumetric flask : 250 + 0.25cm³ 2) Preparation of the Na2CO3 solution. a) Mass of pure Na2CO3 : 1.329 + 0.0001g b) Volume in the volumetric flask : 250 + 0.25 cm³ c) ...read more.

Middle

3 Uncertainty : | 20.5-20.7 | + | 20.5-20.6 | + | 20.5-20.2 | x 100 = 2.9% 20.5 Gross volume of HCl used with percentage of uncertainty = 20.50 cm³ + 2.9% cm³. The molarities of HCl after dilution : M1V1 = M2V2 (2mL) (11M) = (X) (250mL) X = 0.088 M Uncertainty : V1 = 2.0 mL + 0.5 mL V2 = 250.0 mL + 0.5 mL = 0.5 x 100% = 0.5 x 100% 2.0 250.0 = 25 % = 0.2 % Then, add together to form general uncertainty = 25 % + 0.2 % = 25.2 %. ...read more.

Conclusion

of moles Volume 0.0125 = 0.05 M. 0.25 In this reaction, limiting reagent = Na2CO3 Theoretical moles of Na2CO3 solution : Moles = Volume x Molarities = (25cm³) (0.088M) 1000 = 0.0022 mole. Actual moles of Na2CO3 used when titration : Moles = 0.088 2 = 0.044 mole. So the theoretical volume of HCl needed to react with 0.025 mole of Na2CO3 : MV of Na2CO3 = (0.05) (25) = 1.25 (2M) = 2.5 . 1000 = 28.41 cm³. Percentage error : 28.41cm³-20.5cm³ x 100% = 27.8423% 28.41cm³ Conclusion : The actual volume of HCl needed to neutralize the Na2CO3 is 28.41cm³ for the titration. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Chemistry essays

  1. Calcium Carbonate and Hydrochloric Acid

    HCl in the 50 ml3 measuring cylinder * Weighed 1,0 g (� 0,0001g) of marble chips on the electronic scale (which accounted 4 decimals) * The flask with cotton on top was placed on the scale and the scale was adjusted to 0,0000 g * The calcium carbonate (marble chips)

  2. The purpose of this experiment is to find the composition of a sample of ...

    Some inaccurate result may due to : The molarity of sodium carbonate solution was not accurate Calculation errors (e.g. converting mL to L) Not rinsing and drying the beaker for the acid Over titrating Acid or base left on the side of the flask or on the tip of the burette Errors reading volumes.

  1. The rate of reaction between sodium thiosulfate and hydrochloric acid

    * Qualitative observations: * One qualitative observation is the colour of precipitate. I observe that the colour of sulfur after the cross disappears does vary, in respect of the difference in the concentration of sodium thiosulfate. The observation is, the higher the concentration of sodium thiosulfate is, the darker the yellow precipitate gets.

  2. alkali titration

    the same as concentration of acid in 250mL: c = n/v c = 0.0119�2.03% / 0.25 �(0.15/250 x 100%) c = 0.0476 � (2.03+0.06)% ? c = 0.05 mols dm-3 �2.09% (concentration of acid) c = n/v 0.05�2.09% = n / 0.25 �0.06% 0.05�2.09% x 0.25�0.06% = n ?

  1. Lab report. Finding the molar enthalpy change of the reaction between Hydrochloric acid and ...

    I so got: Experiment Total mass ± 0.001 (kg) A .0323 B .0331 C .0330 I then needed to calculate the number of moles of both the solution and the in order to find the limiting reactant as I would need to use the number of moles from the limiting

  2. Measuring the fatty acid percentage of the reused sunflower oil after numerous times of ...

    Also the amount of potatoes must stay the same in each trial if the frying is made by using new oil for different numbers of frying. Like using the oil only for 5 times frying then renewing the oil for 10 times frying and doing this for others.

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