MAKEUP LAB FORM
In order to make up a missed lab:
Fill out the middle of the form below
Have your Instructor/TA sign it. Your Instructor/TA MUST sign the form BEFORE you attend the makeup lab.
Give it to the Hosting Instructor for the section you attend to make up the lab. Note: If a section is full,
students registered for the lab have priority. It is the Hosting Instructor’s discretion as to whether there
is enough room for you to attend when the lab is full. EVEN WITH the Instructor’s signature, the Hosting
Instructor is NOT required to allow you to attend that lab as a makeup.
Make sure your name is on the group list for the day.
The following are approved reasons for missing and making up a lab. Mark the reason for your request: University-sponsored events Illness Family emergency
Other: _____________________________________________________________
Student Name: ___________________________ Student’s ID: _______________________
Lab Session for which student is officially registered:
Instructor’s Name: _____________________
Lab Session number: _____________________
(If you don't know your section number, circle the day and time your lab meets) Day: M T W Th F Sa Time: Morning Afternoon
Lab Session for which student plans to do the make-up experiment
Hosting Instructor’s Name: _____________________
Lab Session number: ___________________________
If you do not know the section number, circle the day and time the lab meets) Day: M T W Th F Sa Time: Morning Afternoon
Signature of your Instructor ______________________
Date__________________________________________
For the Hosting Instructor’s Use Only:
Lab Session:________ Date: ___________ Time:___________ Grade Received: ____________________
Signature of the Hosting Instructor
International University, Vietnam National University - HCMC 1 GENERAL CHEMISTRY LABORAT DATA SHEET
EXPERIMENT 1: CHEMICAL REACTIONS
Group: ______________ Section: _____1________Date: ______________
Group members: _______________________________
_______________________________
_______________________________
_______________________________
Instructor9s/TA9s signature and comments: Expt. 1 Expt. 6 Expt. 2 Expt. 7 Expt. 3 Expt. 8 Expt. 4 Expt. 9 Expt. 5 Approval
International University, Vietnam National University - HCMC 2 GENERAL CHEMISTRY LABORAT 1. Reactions of Cu2+ Reaction Observation 0.5M CuSO4 + 2M NaOH 0.5M CuSO4 + 2M NH4OH
2. Reactions of silver halides Reaction Observation 0.5M KCl + 0.1M AgNO3 0.5M KCl + 0.1M AgNO3 + 2M NH4OH 0.5M KBr + 0.1M AgNO3 0.5M KBr + 0.1M AgNO3 + 2M NH4OH 0.5M KI + 0.1M AgNO3 0.5M KI + 0.1M AgNO3 + 2M NH4OH
International University, Vietnam National University - HCMC 3 GENERAL CHEMISTRY LABORAT 3. Reactions of H2O2 Reaction Observation 0.1M KMnO4 + 2M H2SO4 + H2O2 0.1M KI + 2M H2SO4 + H2O2 H2O2 + MnO2 4. Reactions of Nitrate Reaction Observation 1M NaNO3 + FeSO4 + concentrated H2SO4 1M NaNO2 + FeSO4 + concentrated H2SO4 1M NaNO3 + FeSO4 + concentrated CH3COOH
International University, Vietnam National University - HCMC 4 GENERAL CHEMISTRY LABORAT 5. Reactions of KMnO4 Reaction Observation 0.5M Na2SO3 + 2M H2SO4 + 0.1M KMnO4 0.5M Na2SO3 + 6N NaOH + 0.1M KMnO4 0.5M Na2SO3 + H2O + 0.1M KMnO4
6. Reaction of Potassium Dichromate (K2Cr2O7) Reaction Observation 2M K2Cr2O7 + 6M H2SO4 + C2H5OH 7. A. Reactions of Fe3+ Reaction Observation 0.5M FeCl3 + 2M KOH 0.5M FeCl3 + 2M NH4OH 7. B. Reactions of Fe2+ Reaction Observation 0.5M FeSO4 + 2M KOH 0.5M FeSO4 + 2M NH4OH
International University, Vietnam National University - HCMC 5 GENERAL CHEMISTRY LABORAT 8. Reactions of Al3+ Reaction Observation 0.5M Al2(SO4)3 + 2M NaOH 0.5M Al2(SO4)3 + 2N NaOH + 2M HCl 0.5M Al2(SO4)3 + 2M NaOH + 2M NaOH 9. Flame test Solution Dominant flame color LiCl NaCl KCl CaCl2 BaCl2
International University, Vietnam National University - HCMC 6 GENERAL CHEMISTRY LABORAT DATA SHEET EXPERIMENT 2: pH AND BUFFERS
Group: ______________ Section: _____2________Date: ______________
Group members: _______________________________
_______________________________
_______________________________
_______________________________
Instructor9s/TA9s signature and comments: Expt. 1 Expt. 4 Expt. 2 Expt. 5 Expt. 3 Approval
International University, Vietnam National University - HCMC 7 GENERAL CHEMISTRY LABORAT 1. pH OF DEIONIZED WATER Observed pH Time (second) 1st (your group)
2nd (other group in the class) (Group___) (Group___) 0 20 40 60 80 100 120 140 160 2. pH OF STRONG ACID Measured pH Solution Theoretical pH 1st 2nd (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 3. pH OF WEAK ACID Measured pH Solution Averaged Ka 1st 2nd (Group___) (Group____) 0.1M acetic acid 0.01M acetic acid 0.001M acetic acid
International University, Vietnam National University - HCMC 8 GENERAL CHEMISTRY LABORAT 4. pH OF SALTS Measured pH Solution Predicted pH 1st 2nd (Group____) (Group____) 0.1M NaCl 0.1M CH3COONa 0.1M NH4Cl 5. pH OF BUFFERS Volume (mL) Volume (mL) Measured pH Calculated Buffer 0.1M 0.1M Acid Base pH 1st 2nd CH3COOH CH3COONa (Group__) (Group__) A 10.0 40.0 B 40.0 10.0 C 25.0 25.0
Part I: Addition of 10 drops 0.1 M HCl pH after adding 10
Total volume HCl (drops) to change Buffer pH from the start, pHo drops HCl pH by one unit (pHo-1) A B C
Part II: Addition of 10 drops 0.1 M NaOH pH after adding 10 Total volume NaOH (drops) to Buffer pH from the start, pHo drops NaOH change pH by one unit (pHo+1) A B C
International University, Vietnam National University - HCMC 9 GENERAL CHEMISTRY LABORAT DATA SHEET EXPERIMENT 3: REDOX TITRATION
Group: _____________ Section: _____3_________ Date: ____________
Group members: _______________________________
_______________________________
_______________________________
_______________________________
Instructor9s/TA9s signature and comments: Expt. 1 Expt. 3 Expt. 2 Expt. 4 Approval
International University, Vietnam National University - HCMC 10 GENERAL CHEMISTRY LABORAT
1. TITRATION OF KMnO4 SOLUTION WITH STANDARD H2C2O4 SOLUTION Trial # Burette reading (mL) Volume of KMnO4 (mL) Normality of KMnO4 (N) 1 - 2 -
Average Normality of KMnO4 = ____________ (N)
2. TITRATION OF UNKNOWN CONCENTRATION H2C2O4 SOLUTION WITH STANDARD KMnO4 SOLUTION Trial # Burette reading (mL) Volume of KMnO4 (mL) Normality of H2C2O4 (N) 1 - 2 - Average Normality of H2C2O4 =_______ (N)
3. TITRATION OF UNKNOWN CONCENTRATION FeSO4 SOLUTION WITH STANDARD KMnO4 SOLUTION Trial # Burette reading(mL) Volume of KMnO4 (mL) Normality of FeSO4(N) 1 - 2 - Average Normality of FeSO4 =_______ (N)
International University, Vietnam National University - HCMC 11 GENERAL CHEMISTRY LABORAT DATA SHEET
EXPERIMENT 4: CHEMICAL EQUILIBRIUM
Group: _____________ Section: ______4________ Date: ____________
Group members: _______________________________
_______________________________
_______________________________
_______________________________
Instructor9s/TA9s signature and comments: Expt. 1 Expt. 4 Expt. 2 Expt. 5 Expt. 3 Approval
International University, Vietnam National University - HCMC 12 GENERAL CHEMISTRY LABORAT 1. ACID/BASE EQUILIBRIA Equilibrium System: 2CrO 2 2 4 (aq) + 2H+(aq) í Cr2O7 (aq) + H2O(l) Description of Predicted outcome Observation conditions Initial solution + Conc. HCl + 6 N NaOH
2. EQUILIBRIA OF ACID/BASE INDICATORS
Equilibrium System: H(MV)(aq) + H2O(l) í H3O+(aq) + MV (aq) Addition Predicted outcome Observation None (control) 6 M HCl 6 M NaOH 6 M HCl
International University, Vietnam National University - HCMC 13 GENERAL CHEMISTRY LABORAT 3. COMPLEX ION FORMATION
Equilibrium System: Fe3+(aq) + SCN (aq) í [Fe(SCN)]2+(aq) Addition Predicted outcome Observation None (control) 0.01M FeCl3 0.01 M KSCN 6M NaOH Cold Hot 0.1M AgNO3
International University, Vietnam National University - HCMC 14 GENERAL CHEMISTRY LABORAT
4. EQUILIBRIA OF PRECIPITATION REACTIONS Equilibrium System: Ca2+ 2 (aq) + C2O4 (aq) í CaC2O4(s) Addition Predicted outcome Observation 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
5. TEMPERATURE EFFECTS ON EQUILIBRIA Equilibrium System: Co(H 2+ 2 2O)6 (aq) + 4Cl (aq) í CoCl4 (aq) + 6H2O(l) Description of Predicted outcome Observation conditions Nothing changed (control) Hot water bath Ice-water bath
International University, Vietnam National University - HCMC 15 GENERAL CHEMISTRY LABORAT DATA SHEET
EXPERIMENT 5: FACTORS AFFECTING REACTION RATE
Group: _____________ Section: _____5_________ Date: _____________
Group members: _______________________________
_______________________________
_______________________________
_______________________________
Instructor9s/TA9s signature and comments: Expt. 1 Expt. 3 Expt. 2 Approval
International University, Vietnam National University - HCMC 16 GENERAL CHEMISTRY LABORAT
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 2 3 4 5 6 Mixture Iodide ion Peroxydisulfate Time in seconds 7 8 9 10 11
International University, Vietnam National University - HCMC 17 GENERAL CHEMISTRY LABORAT
2. EFFECT OF TEMPERATURE ON THE REACTION RATE Reaction System: Description of Predicted outcome Observation Reaction time conditions Room temperature 500C 900C
3. EFFECT OF A CATALYST ON THE REACTION RATE (30 pts) Reaction System: Trial Description of Predicted outcome Observation (Reaction rate) conditions 1 + MnCl2 2 + MnO2 3 + NaCl 4 + CaCl2 5 + Zn 6 + KNO3 7 + Fe(NO3)3