International University, Vietnam National University - HCMC 1 CHEMISTRY LABORATORY REPORT
EXPERIMENT 1: CHEMICAL REACTIONS
Group: ______________ Section: _____1_________ Date: ____________ Group members: Seq. Full name Student ID % contribution Signature Score (total = 100%) 1 2 3 4 5 Total score: _______/100
International University, Vietnam National University - HCMC 2 CHEMISTRY LABORATORY I. Introduction
(Introduce what experiments you do in this report)
II. Materials and Methods
(Describe what experiments you did in this report, write down each step of your experiments)
III. Results and Discussion 1. REACTIONS OF Cu2+ Reaction Observation Chemical Equation 0.5M CuSO4 + 2M NaOH 0.5M CuSO4 + 2M NH4OH Discussion:
2. REACTIONS OF SILVER HALIDES Reaction Observation Chemical Equation 0.5M KCl + 0.1M AgNO3 0.5M KCl + 0.1M AgNO 3 + 2M NH4OH 0.5M KBr + 0.1M AgNO3
International University, Vietnam National University - HCMC 3 CHEMISTRY LABORATORY 0.5M KBr + 0.1M AgNO 3 + 2M NH4OH Discussion: 3. REACTIONS OF H2O2 Reaction Observation Chemical Equation 0.1M KMnO4 + 2M H2SO4 + H2O2 0.1M KI + 2M H2SO4 + H2O2 H2O2 + MnO2 Discussion: 4. REACTIONS OF KMnO4 Reaction Observation Chemical Equation 0.5M Na2SO3 + 2M H2SO4 + 0.1M KMnO4 0.5M Na2SO3 + 6N NaOH + 0.1M KMnO4 0.5M Na2SO3 + H O 2 + 0.1M KMnO4 Discussion:
International University, Vietnam National University - HCMC 4 CHEMISTRY LABORATORY
5. A. REACTIONS OF Fe3+ Reaction Observation Chemical Equation 0.5M FeCl3 + 2M KOH 0.5M FeCl3 + 2M NH4OH Discussion:
5. B. REACTIONS OF Fe2+ Reaction Observation Chemical Equation 0.5M FeSO4 + 2M KOH 0.5M FeSO4 + 2M NH4OH Discussion: 6. REACTIONS OF Al3+ Reaction Observation Chemical Equation 0.5M Al2(SO4)3 + 2N NaOH + 2M HCl 0.5M Al2(SO4)3 + 2M NaOH + 2M NaOH Discussion:
International University, Vietnam National University - HCMC 5 CHEMISTRY LABORATORY 7. FLAME TEST Solution Dominant flame Wavelength Frequency Photon energy (J) color (nm) (s ) 1 LiCl NaCl KCl CaCl2 BaCl2 Discussion: IV. Conclusions
(conclude all your performance in this report) END.
International University, Vietnam National University - HCMC 6 CHEMISTRY LABORATORY REPORT
EXPERIMENT 2: pH AND BUFFERS
Group: _____________ Section: _______2_______ Date: ____________ Group members: Seq. Full name Student ID % contribution Signature Score (total = 100%) 1 2 3 4 5 Total score: ________/100
International University, Vietnam National University - HCMC 7 CHEMISTRY LABORATORY I. Introduction
(Introduce what experiments you do in this report)
II. Materials and Methods
(Describe what experiments you did in this report, write down each step of your experiments)
III. Results and discussion
1. pH OF DEIONIZED WATER Observed pH Time 1st 2nd Discussion (second) (Group___) (Group___) 0 20 40 60 2. pH OF STRONG ACID Measured pH Theoretical Solution 1st 2nd Discussion pH (Group___)(Group____) 10 mL of 0.1M HCl Add 90 mL of distilled water Add 10 mL of 0.1M NaOH Add 90 mL of 0.01M NaOH Calculation:
International University, Vietnam National University - HCMC 8 CHEMISTRY LABORATORY 3. pH OF WEAK ACID Measured pH Solution 1st 2nd Ka Discussion (Group___)(Group____) 0.1M acetic acid 0.01M acetic acid 0.001M acetic acid Calculation: 4. pH OF SALTS Measured pH Predicted Solution 1st 2nd Discussion pH (Group____) (Group____) 0.1M NaCl 0.1M CH3COONa 0.1M NH4Cl Calculation: 5. pH OF BUFFERS Volume Volume (mL) Measured pH Acid Base Calculated Buffer (mL) 0.1M 0.1M 1st 2nd pH CH COOH 3 CH COONa 3 (Group__) (Group__)
International University, Vietnam National University - HCMC 9 CHEMISTRY LABORATORY A 10.0 40.0 B 40.0 10.0 Calculation pH: Discussion:
Part I: Addition of 10 drops 0.1 M HCl pH from pH after
Total volume HCl (drops) Buffer the start, adding 10
to change pH by one unit Discussion pHo drops HCl (pH -1) o A B
Part II: Addition of 10 drops 0.1 M NaOH pH from pH after Total volume NaOH Buffer the start, adding 10 (drops) to change pH by Discussion pHo drops NaOH one unit (pHo+1) A B IV. Conclusions
(conclude all your performance in this report) END.
International University, Vietnam National University - HCMC 10 CHEMISTRY LABORATORY REPORT
EXPERIMENT 3: REDOX TITRATION
Group: _____________ Section: ______3________ Date: ____________ Group members: Seq. Full name Student ID % contribution Signature Score (total = 100%) 1 2 3 4 5 Total score:________/100
International University, Vietnam National University - HCMC 11 CHEMISTRY LABORATORY I. Introduction
(Introduce what experiments you do in this report)
II. Materials and Methods
(Describe what experiments you did in this report, write down each step of your experiments)
III. Results and discussion
1. STANDARDIZATION OF PREPARED KMnO SOLUTION 4 Calculation:
Normality of the standard H2C2O solution, 4 N(H2C O 2 ) = ___________________ 4
Volume of the standard H2C2O solution used, 4 V(H2C O 2 ) = ___________________ 4 Trial # Burette reading (mL) Volume of KMnO (mL) 4 Normality of KMnO (N) 4 1 - 2 -
Average Normality of KMnO = 4 ____________ Discussion:
International University, Vietnam National University - HCMC 12 CHEMISTRY LABORATORY
2. DETERMINATION OF UNKNOWN CONCENTRATION H2C2O4 SOLUTION Calculation:
Normality of the standard KMnO solution, 4 N(KMnO ) 4 = ___________________
Volume of the unknown H2C2O solution used, 4 V(H2C O 2 ) = ___________________ 4 Trial # Burette reading (mL) Volume of KMnO (mL) 4 Normality of H2C2O (N) 4 1 - 2 -
Average Normality of H2C2O = 4 ____________ Discussion:
3. DETERMINATION OF UNKNOWN CONCENTRATION FeSO SOLUTION 4 Calculation:
Normality of the standard KMnO solution, 4
N(KMnO ) = ___________________ 4
Volume of the unknown FeSO solution used, 4
V(FeSO ) = ___________________ 4 Trial # Burette reading (mL) Volume of KMnO (mL) 4 Normality of FeSO4 (N) 1 - 2 -
Average Normality of FeSO = 4 ____________ Discussion: IV. Conclusions
(conclude all your performance in this report) END.
International University, Vietnam National University - HCMC 13 CHEMISTRY LABORATORY REPORT
EXPERIMENT 4: CHEMICAL EQUILIBRIUM
Group: _____________ Section: ______4________ Date: ____________ Group members: Seq. Full name Student ID % contribution Signature Score (total = 100%) 1 2 3 4 5 Total score: ________/100 I. Introduction
(Introduce what experiments you do in this report)
International University, Vietnam National University - HCMC 14 CHEMISTRY LABORATORY
II. Materials and Methods
(Describe what experiments you did in this report, write down each step of your experiments)
III. Results and discussion
1. ACID/BASE EQUILIBRIA
Equilibrium System: 2CrO 2 + 2 4
+ 2H (aq) ⇌ Cr O 2 7 + H O(l) 2 Description of Predicted Observation Discussion conditions outcome Initial solution + Conc. HCl + 6 N NaOH Note:
2. EQUILIBRIA OF ACID/BASE INDICATORS
Equilibrium System: H(MV)(aq) + H O(l) 2 H ⇌ 3O+(aq) + MV (aq) Addition Predicted Observation Discussion
International University, Vietnam National University - HCMC 15 CHEMISTRY LABORATORY outcome None (control) 6 M HCl 6 M NaOH 6 M HCl Note:
3. EQUILIBRIA OF PRECIPITATION REACTIONS
Equilibrium System: Ca2+(aq) + C O 2 2 4
(aq) ⇌ CaC2O (s) 4 Predicted Addition Observation Discussion outcome Test tube 1: 0.1 M Na2C2O4 Test tube 2: + 0.1 M H2C2O4 Test tube 2: + 6 M HCl Test tube 2: + 6 M NH4OH
International University, Vietnam National University - HCMC 16 CHEMISTRY LABORATORY Note:
4. TEMPERATURE EFFECTS ON EQUILIBRIA
Equilibrium System: Co(H O) 2+ 2 2 6
(aq) + 4Cl (aq) ⇌ CoCl4 (aq) + 6H2O(l) Description of Predicted Observation Discussion conditions outcome Nothing changed (control) Hot water bath Ice-water bath Note: IV. Conclusions
(conclude all your performance in this report) END.
International University, Vietnam National University - HCMC 17 CHEMISTRY LABORATORY REPORT
EXPERIMENT 5: FACTORS AFFECTING REACTION RATE
Group: _____________ Section: ______5________ Date: ____________ Group members: Seq. Full name Student ID % contribution Signature Score (total = 100%) 1 2 3 4 5 Total score: ________/100
International University, Vietnam National University - HCMC 18 CHEMISTRY LABORATORY I. Introduction
(Introduce what experiments you do in this report)
II. Materials and Methods
(Describe what experiments you did in this report, write down each step of your experiments)
III. Results and discussion
1. EFFECT OF CONCENTRATION ON REACTION TIME
Reaction 1: __________________________________________________
Reaction 2: __________________________________________________
Calculate the initial concentrations of I- and S 2- 2O8 ions: Mixture # 5: [I-] = [S 2- 2O8 ] = Mixture Iodide ion Peroxydisulfate Time in seconds 1 0.08 0.04 2 0.068 0.04 3 0.056 0.04 4 0.044 0.04 5 0.032 0.04 6 0.02 0.04 Mixture Iodide ion Peroxydisulfate Time in seconds 7 0.08 0.034 8 0.08 0.028 9 0.08 0.022 10 0.08 0.016 11 0.08 0.01
Plotting the concentration of iodide ion versus time: [Note: X – axis: time; Y – axis: concentrations].
International University, Vietnam National University - HCMC 19 CHEMISTRY LABORATORY * Mixtures # 1-6: Graph
The order of reaction with respect to iodide ion? Discussion:
* Mixtures # 1, 7, 8, 9, 10, and 11: Graph
The order of reaction with respect to peroxydisulfate ion? Discussion:
2. EFFECT OF TEMPERATURE ON THE REACTION RATE
International University, Vietnam National University - HCMC 20 CHEMISTRY LABORATORY Reaction System: Description of Predicted Reaction Observation Discussion conditions outcome time Room temperature 50 C 0 90 C 0 Note:
3. EFFECT OF A CATALYST ON THE REACTION RATE Reaction System: Description of Predicted Observation Trial Discussion conditions outcome (Reaction rate) 1 + MnCl2 2 + MnO2 3 + NaCl 4 + CaCl2 5 + Zn 6 + KNO3 7 + Fe(NO3)3
The order of catalyst activity: Note:
International University, Vietnam National University - HCMC 21 CHEMISTRY LABORATORY IV. Conclusions
(conclude all your performance in this report) END.