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

Reactants Lab. In this experiment we discovered three types of chemical reactions, Single and Double Replacement reactions, along with Neutralization Reaction.

Extracts from this document...

Introduction

Types of Reactions Design (D) Aspect 1: Problem: What type of chemical reactions occurs when different reactants are mixed? Variables: Manipulated: Combination of reactants Responding: Type of Chemical Reaction Controlled: 1. Same amount of reactants used (1 piece for solid's, 4 drops for liquid's) 2. Spot plate is washed before reactants are mixed 3. Same amount of time substance is allowed for chemical reaction to occur (15s) 4. Because data is qualitative, observations will be made by the same person. Aspect 2: Controlling Variables: The same amount of reactants being used will be controlled by using the same amount of reactants in each reaction (1 piece for solid's, 4 drops for liquids). Spot plate will be washed before each chemical reaction (using the water from the squeeze bottle) to ensure no residue is left from previous reaction. Observations will be made 15 seconds after the chemical raction. Time will be kept using a watch. The same person will make qualitative observations, to ensure that observations are kept consistent. ...read more.

Middle

barium hydroxide (aq) Ba(OH)2 (aq) Two transparent liquids Milky-white substance. Gas bubbles form. hydrochloric acid (aq) HCl (aq) magnesium hydroxide (aq) Mg(OH)2 (aq) Transparent liquids Transparent liquid hydrochloric acid (aq) HCl (aq) sodium acetate (aq) C2H3NaO2 (aq) Transparent liquids Transparent liquid calcium (s) Ca (s) water (l) H2O (l) Flaky-white solid, and transparent liquid Calcium dissolves a bit in water. A few gas bubbles zinc (s) Zn (s) copper (II) sulphate (aq) CuSO4 (aq) Grey rocky solid, with bluish liquid Gas bubbles form on zinc cobalt chloride (aq) CoCl2 (aq) magnesium hydroxide (aq) Mg(OH)2 (aq) Red liquid and clear liquid Pinkish-purple substance. Gas bubbles form magnesium (s) Mg (s) hydrochloric acid (aq) HCl (aq) Silver, lustrous metal and transparent liquid Gas bubbles form on magnesium sodium bromide (aq) NaBr (aq) chlorine (aq) Cl2 (aq) Transparent liquids Transparent liquid aluminum (s) Al (s) copper (II) chloride (aq) CuCl2 (aq) Lustrous rock and blue liquid Gas bubbles form on aluminum Aspect 2: Processing Data Chemical Reactants and Products Equations Balanced H2SO4(aq) ...read more.

Conclusion

Referring to Data in Aspect 2 & 3 of Data Collection and Processing, we can see there were 5 single replacement reactions, and 4 double replacement reactions (one of which was a neutralization reaction). The reactions involving an element and a compound were all single replacement reactions, and the reaction involving two compounds were double replacements (which included a neutralization reaction). Aspect 2: Evaluate the Procedure: A problem with this procedure is that it doesn't explore all types of chemical reactions. Also, try as one may, it is sometimes difficult to get the residue of a substance off the spot plate. This tampers with results. Aspect 3 Improving Experimental Design: A few more reactions should be added where simple composition and decomposition are shown. Also, using the Bunsen burner, a reaction should be added where hydrocarbon combustion is shown. Disposable spot plates should be used, to ensure that residue left by previous reactants and reactions, do not tamper with results. ?? ?? ?? ?? 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. The purpose of this lab was to observe chemical changes, to write balanced equations, ...

    * Reaction 4: Decomposition of hydrogen peroxide in the presence of manganese dioxide catalyst. Materials: Test tube, test tube rack, hydrogen peroxide (H2O2), manganese dioxide, wooden splint, matches 1. Place 5 mL of hydrogen peroxide into a test tube. 2. Prepare a glowing splint. 3.

  2. Enthalpy of Combustion of Alcohols Lab

    For the density of water, it could have been different than 1 gmcm-3 but we assumed it to be the density of pure water. There could have been impurities in the water or other factors could affect it to change its density.

  1. Aim To investigate the chemical properties of alcohol

    Thus the equilibrium above is further to the left in the case of ethanol than water. Hence, ethanol is the weaker acid. When glacial ethanoic acid, concentrated sulphuric acid and ethanol are mixed, an esterification reaction occurs the product of which is ethyl ethanoate.

  2. Acids/Bases Design Lab. How does a change in the pH value of a solution ...

    For example, if in one of the trials using 2 mol dm-3 hydrochloric acid, one of the samples contains 0.029 dm3, the concentration of the hydrochloric acid then increases to 2.068, and therefore, the pH value will also increase. This could potentially compromise experimental data collected during the investigation.

  1. The aim of the experiment is determining the percentage yield of the product (copper), ...

    VARIABLES When the above equation is explained, it shows very clearly the dependent and independent variables. Here is the same equation rewritten, and logically explained. 3CuCl2. H2O + 2Al 2AlCl3 + 3Cu Copper chloride in water + aluminum (yields when heat and agitating added)

  2. Chemistry Limiting Reactant Lab

    What was the actual mass of BaCO3(s) that formed? Percentage Yield: 82% Conclusion and Evaluation In conclusion, the reaction between sodium carbonate and calcium chloride results in sodium chloride and a calcium carbonate precipitate. The limiting reactant is deduced to be calcium chloride and the excess reactant is sodium carbonate.

  1. Electrolysis of copper sulphate

    8.085 8.092 0.007 0.0046 C2 7.727 7.734 0.007 C3 8.217 8.222 0.005 C4 8.608 8.616 0.008 C5 7.976 7.972 -0.004 C1 0.6 8.081 8.09 0.009 0.0078 C2 7.721 7.039 0.029 C3 8.211 8.217 0.005 C4 8.612 8.622 0.01 C5 7.965 7.974 0.009 C1 0.8 8.08 8.09 0.01 0.0076 C2 7.721

  2. Investigation of reversible reactions at equilibrium - CuCl2 (s) was added to HCl , ...

    Data Processing Experiment 1 Cu (H2O)62+ (aq) + 4Cl- (aq) â CuCl42- (aq) + 6H2O (l) When HCl is added to the following equilibrium there is an excess of Cl- ions in the left side of equilibrium . Hence according to Le chatelier’s principle i.e.

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