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

The balanced equation shows that two moles of silver nitrate react with one mole of copper

Extracts from this document...

Introduction

Copper and Silver Reaction Chemistry Internal Assessment Raw data table: What I measured Value (unit) Uncertainty Weight of Beaker 103.335(g) ±0.001g Volume of Silver nitrate 100(cm3) ±1 cm3 Concentration of Silver Nitrate 0.1(mol dm-3) Initial weight of Copper wire 2.020(g) ±0.001g Final weight of copper wire 1.688 ±0.001g Final weight of silver crystals and beaker 105.139 ±0.001g Qualitative Observations: * The copper was a orange/red colour before being submerged. * While the silver nitrate AgNO3 was a clear colourless liquid. * Immediately after the copper was submerged it turned black. * The copper wire was resting on the bottom of the beaker. * After prolonged submersion the wire became thicker as more precipitate was formed on the wire. * After prolonged submersion the solution became a clear light blue solution. * After 24 hours a silver/grey crystalline structure formed around the wire and on the bottom of the beaker. Processed data table: What I measured Value (unit) 3sf Uncertainty Mass of reacted Cu 0.332(g) ...read more.

Middle

During the reaction the silver is reduced as it gains electrons and the copper is oxidized as it loses electrons. Cu (s) + 2AgNO3+ (aq) → Cu(NO3)2 (aq) + 2Ag (s) The balanced equation shows that two moles of silver nitrate react with one mole of copper to produce one mole of copper nitrate and two moles of silver. The molar ratio between Copper and Silver should be 1:2, which you can see by the coefficients in the balanced equation. Therefore my hypothesis is wrong as I have 1 more mole of silver than I should have, therefore my mass of silver was larger than expected or the moles of copper was lower than expected and my mass of copper was lower than expected. Yet our small precision error, or random error attributed to the precision of instruments is ±0.716%, which indicates that our range excludes the accepted value of 2. Therefore our must have some experimental error. This experimental error can be determined as a percentage through the following formula: % This experimental error is incredibly large. ...read more.

Conclusion

Another possibility as that during the decanting some crystals were removed from the beaker. This would have decreased the mass of silver, thus decreased the n(Ag) decreasing our ratio. As our ratio was larger than accepted value it is unlikely that this played a significant part in the experimental error of my experiment. To ensure that this would not effect a future experiment I would use a filtration system using filter paper instead of using a decanting method. Experimental error could also have been generated through having an incorrect copper measurement. An incorrect copper measurement could have been caused by copper flecks flaking off the wire into the solution and then being decanted out, though our method did try to remove this possibility by adding more silver nitrate it is still a possibility. This would have meant that we calculated less moles of copper than actually reacted. To ensure that this would not effect our results we should have left the extra silver nitrate for longer to allow it too react with any left over copper flecks. ...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. Investigate the rate of reaction of luminol in various factors. The objective was to ...

    Now, despite of the shape of the temperature graph, to analyse the rate equation, I have: Rate = k [luminol]0[ H2O2]2 Rate = k [H2O2]2 As a conclusion, luminol has no effect on this reaction, it is because it has zero order for the reaction, while hydrogen peroxide has second

  2. Can one determine the coefficients of a balanced chemical equation by having the mass ...

    Record this in "Data Table 1 - Qualitative Data Table" and record it under "Before Reaction". 6. Take 7.50g of copper(ii) chloride salt and spray it with water in a 150mL beaker until the whole salt is dissolved in an aqueous solution.

  1. Relating Moles to Coefficients of a Chemical Equation

    Aim: To find the mole ratio of a reactant to a product in a chemical reaction . Apparatus: - Balance - Bunsen Burner - Two 150 cm3 Beaker - Glass Stirring Rod - Tripod - Gauze - 100 cm3 Graduated Cylinder - Goggles - Heat Proof Mat - Pure Distilled

  2. Effect of Current on The Quantity of Products in Copper Purification Through Electrolysis

    * Spatule * Sonde � temp�rature * 31,210 g de CuSO4 ? 5H2O en poudre * 1 pipette de 10 mL avec ballon en caoutchouc * 2 grands contenants � 1000mL avec bouchon * Ruban masqu� * Lunettes de s�curit� * Amp�rem�tre * Laine d'acier * 3 fils conducteurs (2 rouges, 1 noir)

  1. Aim: To determine the concentration of chloride ions in sea water by titration ...

    Thus, the end-points achieved will be precise. Concentration and type of titrant. To find accurate and reliable results, the same silver nitrate solution must be used. Otherwise, it would result in different readings which cannot be relied upon for further calculations. Use F1 solution provided for every titration carried out.

  2. Analysis of Silver in an Alloy

    The silver chloride precipitate was filtered from this solution. The following demonstrates the reaction for the precipitation mentioned: Ag+ + Cl- --> AgCl(s) Procedure: Day 1 * The mass of a piece of dime made before 1965 (silver-copper alloy) was measured using an analytical balance and recorded.

  1. Electrolysis of copper sulphate

    From observing the results and graphs, it seems that the results obtained in the experiment show no real pattern or strong enough correlation to indicate a relationship of direct proportionality between current quantities applied to the electrolytic cell and mass deposited on the cathode and comparing the theoretical results of

  2. Research into the production of Nitrate Fertillisers.

    A solution containing dissolved ammonium sulfate is often added to post-emergence herbicide sprays to improve their effectiveness at weed control. Most plants are able to utilize both ammonium and nitrate forms of N for growth. In warm soils, microbes will rapidly begin to convert ammonium to nitrate in the process of nitrification [2 NH4+ + 3O22NO3- + 2H2O + 4H+].

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