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

Ionic and Molecular Compounds Lab

Extracts from this document...

Introduction

Title: Ionic and Molecular Compounds Lab Problem: What are some characteristic properties of: * Ionic compounds? * Molecular compounds? * Acids? * Bases? Which of the unknown compounds provided are: * Ionic compounds * Molecular compounds * Acids * Bases Materials: eye dropper eight different known chemical compounds eight unknown chemical compounds spot plate blue and red litmus paper pH test paper strips conductivity tester lab apron safety goggles Procedure: 1. These tests are available to you. a. Conductivity test b. Litmus test c. pH paper 2. Also record qualitative data 3. Classify compound into one of these categories: a. a. ionic b. molecular c. acid d. base Observations: Substance Formula with state Litmus (B-R or R-B...) ...read more.

Middle

Substance Formula Type of compound boric acid H3BO3(aq) acid Phosphoric acid H3PO4(aq) acid sodium hydroxide NaOH base Ammonium hydroxide NH4OH base Copper (II)sulphate+ pentahydrate CuSo4.5H2O+H2O ionic Sodium chloride+ water NaCl+H2O ionic Glucose+ water C6H12O6+H2O molecular Silicon dioxide (silica)+ water SiO2+H2O molecular Unknown2 / molecular or acid Unknown3 / Ionic Unknown4 / base Unknown6 / ionic Unknown7 / base Unknown8 / acid Unknown9 / acid Unknown10 / molecular 2. Type of compound Characteristics Ionic compounds conduct electricity, contains positively and negatively charged elements, high melting point, high boiling point Molecular compounds do not conduct electricity, contains only negatively charged elements (anions), low melting point, low boiling point Acids has a pH level less than 7, have H at the start or end of formulas, tastes sour, not slippery Bases usually contains hydroxide, has a pH level greater than 7, ...read more.

Conclusion

Unknown 8 had a pH level of 4, and unknown 9 had a pH level of 1. Unknowns 4 and 7 could be bases because they both had a pH level of 14, making them very basic. An error that was made in this experiment is that each of the substances could be contaminated when the litmus paper was put into them for too long, and the chemicals on the litmus paper may dissolve in the substances. Also, a substance could be contaminated when the conductivity tester was previously dipped into another substance, and is not cleaned thoroughly before being put into the next substance. One of the improvements that can be made is that try not to leave the litmus paper in the substance for too long. Also, a different conductivity tester could be used for each of the substances to minimize the amount of contamination. ...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 experiment is to determine whether different ionic compounds containing ...

    Vernier's Logger Pro 6. Weigh boats 7. Balance 8. Ionic compounds in solid state * NaI * NaCl * NaF 9. Spatula (to add ionic compounds onto the weigh boats) Procedure: 1. Set up the gas pressure sensor close to the station where the measuring will occur so as not to loose any ethanol if it evaporates a.

  2. A Comparison of Strong and Weak Acids and Bases

    Thus, the concentration of HCl(aq) will equals to the concentration of H+(aq) and Cl-(aq). Therefore, the concentration of H+(aq) is 0.01M. Thus, Example calculation (Strong base): * 0.01M NaOH(aq) was taken as an example calculation Chemical Equation: Necessary Formula: As seen from the equation above, the base (NaOH(aq))

  1. Strong and Weak Acids And Bases

    Rate of Reaction(Experimental) Observations Mg + 2HCl -->H2 (g) + MgCl2 Fast Fast Bubbles, foggy, H2 gas forming Zn + 2HCl -->H2 (g) + ZnCl2 Slow Slow Bubbles, foggy, H2 gas forming Cu + 2HCl -->H2 (g) + CuCl2 Slow Slow Bubbles, foggy, H2 gas forming Table 6 -3M Ethanoic Acid Reaction Prediction of Rate of Reaction (Theoretical)

  2. Using Solubility Rules to Indentify Unknown Solutions

    Through this, the precipitate and the predicted mass of the precipitates when paired with one of the six ionic solutions given above were determined. It is also notable to state the low uncertainties associated with the calculation above, suggesting a strong experimental design and a well executed protocol with few random error.

  1. Physical Properties of Organic Compounds

    Since alcohols involve hydrogen bonding, as well as dipole-dipole, they are much harder to separate than aldehydes which only form dipole-dipole bonds. Hence, in general, alcohols have higher boiling points than aldehydes 9) What is the functional group in a carboxylic acid?

  2. Electrolysis of copper sulphate

    Comparison of results The graph above displays both the theoretically calculated mass and the experimentally obtained mass results in respect to current. From this comparison, it can be seen that the results obtained in the experiment are poorly correlated to, and show neither accuracy nor precision to the theoretical mass data.

  1. Chemistry Titration Acid Base Lab

    Evaluation There were few errors that took place during the course of experimentation. These errors could have negligibly affected the results obtained throughout the process. One considerable error that took place was making the sodium hydroxide solution. 1gram of white crystalline sodium hydroxide pellets were required in order to create the solution.

  2. Organic lab. Comparison of alkanes and alkenes

    left behind after the reaction. Therefore the products of these combustions would not only be CO2 and H2O (water vapour) but also the noious CO and Carbon (black smoke and soot). These equations thus do not represent fully the reaction which took place.

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