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

Limiting Reagents Lab

Extracts from this document...


Limiting Reagents Lab Design (D) Aspect 1: Problem: What mass of precipitate will form when 1.69g of CuCl2.2H20 reacts with 1.31g of aluminium? Aspect 3: Materials: > 150 mL beaker > Erlenmeyer Flask > 100ml Graduated Cylinder > Funnel; > Scoopula > Electronic Balance > Stir Rod > Aluminum Foil > CuCl2.2H20 > Distilled Water Procedure: Day 1 > Rinse beakerwith distilled water. > Mass 1.69g of CuCl2.2H2O. > Add to beaker and add 50mL of distilled water. > Mass aluminum. Fold in 1/2 & coil loosely. ...read more.


Aspect 1: Recording Raw Data: Mass of CuCl2.2H2O - 1.93g Mass of Al - ? (The massing of the aluminum was forgotten) Experimental mass of precipitate = .69g Aspect 2: Processing Data 2Al(s) + 3CuCl2.2H2O --> 3Cu(s) + 6H2O(l) + 2AlCl3(aq) m Al=1.93g M Al= 26.98 g/mol m 3CuCl2.2H2o = 1.69 g M 3CuCl2.2H2o = 152.47 g/mol (Chem 20 Data Booklet) m Cu = ? n CuCl2.2H2O = 1.93g / 170.49 g/mol n CuCl2.2H2O = .011320312 mol 3 mol CuCl2.2H2O = 3 mols Cu n Cu = .011320312 mol m Cu = .011320312 mol x 63.55 g/mol m Cu = .719g % yield = .69 / .719 = 96% Aspect 3: Experimental mass of Cu(s) ...read more.


Aspect 2: Evaluate: There were .029g of Cu precipitate less than expected. It is likely that some of the copper went into the Erlenmeyer or was stuck on the funnel. Despite thorough rinsing of the filter paper, some of the precipitate got through the filter paper and into the Erlenmeyer. Aspect 3 Improving Experimental Design: Instead of one piece of filter paper, two pieces should be used. This would lead to less precipitate going into the Erlenmeyer. Also, the water in the Erlenmeyer could be re-filtered. ?? ?? ?? ?? Page | 1 Syed Hasan ...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. Chemistry Limiting Reactant Lab

    Therefore, when evaporating the filtered solution to dryness, there would also be sodium carbonate. Furthermore, the filter paper is not completely efficient in obtaining the calcium carbonate precipitate as the percentage yield is only 92 � 9%. This means that the actual yield does not equal the theoretical yield.

  2. Energetics Design Lab

    Pour 50cm3 of CH3COOH into the copper cup and place the copper cup in the Styrofoam cup 2) Measure the initial temperature of the acid 3) Hold the weighing boat with sodium carbonate (2.65g) in one hand and the lid to the copper cup in the other.

  1. chem design lab 2

    measure the temperature of the water and record it under 2 minute trial 13. Place the liquid fuel under the beaker and carefully light the candle 14. Using the stopwatch, start the time for 2 minutes and blow out the candle after 2 minutes has passed 15.

  2. Percent Yield Lab. This experiment has proven that KI is the limiting reagent ...

    So in this case the maximum value of final product was limited by the amount of KI. From determining the limiting reagent the theoretical mass of the product was calculated. Discussion: The results compared to the previously stated hypothesis and expected outcome was perfect.

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