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Quiz for Laboratory for General Chemistry | CHEM 1106, Quizzes of Chemistry

University of Texas - El PasoChemistry

Material Type: Quiz; Class: Laboratory for CHEM 1306; Subject: Chemistry; University: University of Texas - El Paso; Term: Unknown 2000;

Typology: Quizzes

Pre 2010

Uploaded on 08/18/2009

koofers-user-ak4
koofers-user-ak4 🇺🇸

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Lab 1106Quiz
1. Define an acid and a base in terms of releasing H3O+ or OH-
2. How can you determine if one solution is a base or an acid?
3. Write the equation for the pH?
4. Complete the tables below
Table 1
what ions
Sample concentration release in water
mol/litro pH pOH OH- or H3O+
Acid(A) or
Base(B)
Weak(W) or
Strong(S)
H2SO4 0.10000 1.00 -
NaOH 0.01000 12.00 2.00
CH3COOH 0.00035 3.46 -
NH4OH 0.00005 9.70 4.3
Unknow 1 0.01000 2.00 -
Unknow 2 0.01000 12.00 2.00
Table 2
PH POH acid(A) or base(B)
write the correct letter of the concentration in which
belong
sample 1 1.5 -
sample 2 - 12.2
sample 3 3.2
sample 4 - 9.1
sample 5 2.3 -
sample 6 - 12
H3O+ mol/l OH- mol/l
a) 0.2231302 d) 0.0000050
b) 0.0407622 e) 0.0001117
c) 0.1002588 f) 0.0000061
Lab 1106
Kinetics
pf3
pf4
pf5
pf8

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Lab 1106Quiz

  1. Define an acid and a base in terms of releasing H3O+^ or OH-
  2. How can you determine if one solution is a base or an acid?
  3. Write the equation for the pH?
  4. Complete the tables below Table 1 what ions Sample concentration release in water mol/litro pH pOH OH-^ or H3O+ Acid(A) or Base(B) Weak(W) or Strong(S) H2SO4 0.10000 1.00 - NaOH 0.01000 12.00 2. CH3COOH 0.00035 3.46 - NH4OH 0.00005 9.70 4. Unknow 1 0.01000 2.00 - Unknow 2 0.01000 12.00 2. Table 2 PH POH acid(A) or base(B) write the correct letter of the concentration in which belong sample 1 1.5 - sample 2 - 12. sample 3 3. sample 4 - 9. sample 5 2.3 - sample 6 - 12 H3O+^ mol/l^ OH-^ mol/l a) 0.2231302 d) 0. b) 0.0407622 e) 0. c) 0.1002588 f) 0. Lab 1106 Kinetics
  1. How can you define the rate law for any reaction?
  2. Express the rate law for the reaction between KMnO 4 and H 2 C 2 O 4?
  3. Define the meaning for each term in the above equation
  4. What was the function of the water and the MnSO 4 , whose amount stayed constant, in the reaction between KMnO 4 and H 2 C 2 O 4?
  5. How can you identify the rate law with the data that is plotted as Absorbance versus Time
  6. Write the equation to determine the order of the reaction “x and y”, on the reaction you worked on in class. Quiz pKa Chem 1106 Name Section date 1What does pKa measure?
  7. In the experiment how will you find pKa if you know the equivalence point?
  8. We will do 4 titrations what will they be in terms of strong acid/ weak base?
  9. Why do we use a pH electrode when doing this experiment?
  1. When are reactions the fastest?
  2. If you have a 0.1 M KMnO4 solution how do you make a 0.08 M dilution using a 100 ml volumetric flask
  3. What will the graph look like before you transform it?
  4. What is water used for in the reaction? Bonus Quiz 1106 Fusion and titrations
  5. What is the definition end point?
  6. What is the definition of equivalence point?
  7. What does pKa represent for a/an acid or base?
  8. What is the definition of fusion?
  1. What is the definition of enthalpy?
  2. Where is fusion measured?
  3. Why do you weigh the ice?
  4. On the MSDS for ice what precautions should you take? Bonus : What is the equation for determining enthalpy and entropy? Quiz Calibration Name Chem 1106 Section
  5. What were the units on the colorimeter?
  6. Two reasons for calibrating an instrument?
  7. Why do you validate the calibration 1 resaon?
  8. From a .01 M solution you will make a .008 M explain how this is done?
  1. Given that the slope of the line was R1 = 3.3 e - R2 = 9.9 e - R3 = 6.6 e - What is the order of the reaction AB + CD Bonus : What does a pH meter measure Lab 1106 Study Guide April 2007 All material on the quizzes Know the following terms and any units associated with them: titration, catalyst, solute, solvent, density, super cooling, endpoint, equilivance point, equilibrium, pH, pKa, thermistor, pH electro rode, and enthalpy, entropy What was the acceptable range of the thermistor error? Where do you see the equilivance point, the endpoint and pKa on a Titration curve? Why do you calibrate any instrument? Why do you run all experiments in triplicate? Know any formula that was used in lab: density, Q surr, enthalpy entropy, and pH Name the parts of the balances and what each is used for? Know the glassware in the lab? All parts of a burette? Why do you standardize the pH electrode? How do you calculate moles in solution form a titration and the Molarity? Equilibrium constant equation and given the data how do you calculate the rate What is beers law? Calibration of a colorimeter what is the error limit. What is a salt How do you determine the possible pH of a salt Write a complete reaction for any salt of an acid What is the difference between an acid and a base, and what defines a strong acid or base

What is the absorbitivity and how does it relate to the Transmittance Beers law equation Why do you not eat or drink in a chemistry lab? Why must use closed toe shoes? What is the purpose of safety glasses?