1. 1
  2. 2
  3. 3

Titration experiment. Standardization of hydrochloric acid using sodium carbonate.

Extracts from this essay...


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)


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 %.


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.

The above preview is unformatted text

Found what you're looking for?

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

Not the one? Search for your essay title...
  • Over 180,000 student essays
  • Every subject and level covered
  • Thousands of essays marked by teachers

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. alkali titration

    This would have because the measurement to be inaccurate as the air bubbles would have caused the reading of the solution to be greater than it actually is. Over time when the bubbles removed itself from the solution which would have caused a decrease in solution.

  1. Chemistry Titration Acid Base Lab

    + Na+(aq) + Cl-(aq) H+(aq) + OH-(aq) --> H2O(l) The first equation displays the reaction between the strong acid and strong base. The second reaction displays the HCl and NaOH dissociated in their respective ions. The last equation is known as the net ionic equation which eliminates the spectator ions from the previous equation.

  2. 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.

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

    reactant to divide by the heat energy in order to get the molar enthalpy change. I did this as we know we used a 2 mol/l solution of HCl we can calculate the number of moles in .03 l so getting 0.06 moles.

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

    after its first use, making it useless. And the oil begins to breakdown creating acrolein (systematic name: propenal) which is the simplest unsaturated aldehyde as an obnoxious-smelling compound. Thus oil has to have a high smoke point If it is going to be used many times.

  • Over 180,000 essays
    written by students
  • Annotated by
    experienced teachers
  • Ideas and feedback to write
    your own great essays

Marked by a teacher

This essay has been marked by one of our great teachers. You can read the full teachers notes when you download the essay.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review on the essay page.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review under the essay preview on this page.