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10. In the alcobols and phenols lab, the aleohols were oxidized using what agent? (a) sulfurie...
om 4. In the structural features of sw a welch of the following was to distinguish...
om 4. In the structural features of sw a welch of the following was to distinguish reducing monosaccharides freeding disaccharides? (a) Benedict's Test (e) ladine Test (b) Molisch Test (d) Barfoed's Test is indicate 3. In the Seliwanoll's test, a positive result for the presence of ketohexos what color? (a) purple (c) dark reddish brown (b) red-orange (d) greenish-blue 6. Vitamin C is also known as (a) sodium hydroxide (b) sulfuric acid (e) ascorbic acid (d) glucose 7. The oxidation...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ; kb= 1.75e-5) with 0.0920...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ;
kb= 1.75e-5) with 0.0920 M HCl.
a) calculate the pH of the solution for the following volume of
HCl: 6.25 mL
b) calculate the pH of the solution for the following volume of
HCl: 31.25 mL
c) calculate the pH of the solution for the following volume of
HCl: 50.0 mL
d) Which indicator from the table minimizes the titration error
and why?
blue Indicator thymol blue bromophenol...
For each of the solutions described below, determine the pH range for the solution using the...
For each of the solutions described below, determine the pH range for the solution using the information given and the indicator chart Solution A Indicator Used alizarin yellow Indicator color Yellow bromthymol blue yellow methyl violet violet Range bear the 21 less than 7.6 leathen lib really them 5.1 Gooher the 3.2 bromcresol green green methyl red red The pH range for solution A is 3.2 7.6 Solution B Indicator Used methyl red Indicator color yellow Range leroth 67 alizarin...
line solution then Namor Cole of the Carbobydrae med Glucose Smell of the Colle reside Sce...
line solution then Namor Cole of the Carbobydrae med Glucose Smell of the Colle reside Sce Black Sanch Sweet R. Test for Free Nelydrin test Name of Protein sample Binet Pure pich C. Test for Fats and Ols Name office Solubility test il containing Solubility S Acroientes Olive oil Margarine Ves Муална D. Identify an unknownsample for the presence of Cardrate, Protein, Fats and Ols. Sample amer Test for Cortes Name of Observa Positive Charring tot Mollet Purple ring Positive...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks and complete the questions on the next page FeN2.C.AP 3% H., (Step 3) 6M N OH (Step 4) Heat (Step 5) Fe(OH), (brown solid) Ni(OH)(green solid) (Black solid, Step 6) CO2. JANON (Yellow solution, Step) 1 15M HNO, (Step 7) IM NHACI (Step 8) 15M NH,OH/NH, (Step 9)/Spin (Step 10) 15M HINO, (Step 14) 6M NILOHNH. (Step 15) . fe AKOH) White gel Step...
What is the empirical and molecular formula ? What is the molecular weight ? Computer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 2 Physical Properties BP 180-183 °C Brown Liquid C = 77.38 % H = 7.58 % Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate heated. It was then acidified with dilute sulfuric acid. An intense blue color was observed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed....
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation...
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation Chip didn't dissolve some solid on Bottom Solid completely dissolved Chip floated on top of water Floated on top of water Sugar Wax Cooking oil of these solute? 1. What patterns do you observe regarding the polar and non-polar characteristics of these se 2. What effect do you think heating would have on the solubilities of these substances? B. Non-Polar Solvent: Toluene Solute lodine...
What is the empirical and molecular formula ? What is the molecular weight ? Computer Unknown...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 9 Physical Properties MP 206-210 °C White solid C 77.86 % H=11.76 % Sodium Fusion Test A purtion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No obeervable change was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. Another portion was...
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Lit...
Acid, bases and buffers
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Litmus (color) Solution Juice (color)values (colbr) no reaction 2.890 Magenta 11.37dark green Red blue no reaction 2.700 Magenta lemon juice soft drink drain cleaner no reaction detergent baking soda no reaction red red no raction 3.530 Purple blue 12.56 no reactionno reaction 8.700 dark green 9.350 teal/green Part B Total Number of rops of HCl(aq) Added DI Water...
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq....
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq. NaOH and 5% aq. HCl is suspected of being an amine. What feature of the solubility tests would confirm whether or not it is an amine? Explain. 2. While the effect is generally small enough to he neglected, what variable of laboratory conditions can alter the measured boiling point temperature of the liquid? 3. Match the letter of the functional group to the description...
om 4. In the structural features of sw a welch of the following was to distinguish reducing monosaccharides freeding disaccharides? (a) Benedict's Test (e) ladine Test (b) Molisch Test (d) Barfoed's Test is indicate 3. In the Seliwanoll's test, a positive result for the presence of ketohexos what color? (a) purple (c) dark reddish brown (b) red-orange (d) greenish-blue 6. Vitamin C is also known as (a) sodium hydroxide (b) sulfuric acid (e) ascorbic acid (d) glucose 7. The oxidation...
Consider the titration of 25.00 mL of 0.115M NH3 (ka= 5.70e-10 ;
kb= 1.75e-5) with 0.0920 M HCl.
a) calculate the pH of the solution for the following volume of
HCl: 6.25 mL
b) calculate the pH of the solution for the following volume of
HCl: 31.25 mL
c) calculate the pH of the solution for the following volume of
HCl: 50.0 mL
d) Which indicator from the table minimizes the titration error
and why?
blue Indicator thymol blue bromophenol...
For each of the solutions described below, determine the pH range for the solution using the information given and the indicator chart Solution A Indicator Used alizarin yellow Indicator color Yellow bromthymol blue yellow methyl violet violet Range bear the 21 less than 7.6 leathen lib really them 5.1 Gooher the 3.2 bromcresol green green methyl red red The pH range for solution A is 3.2 7.6 Solution B Indicator Used methyl red Indicator color yellow Range leroth 67 alizarin...
line solution then Namor Cole of the Carbobydrae med Glucose Smell of the Colle reside Sce Black Sanch Sweet R. Test for Free Nelydrin test Name of Protein sample Binet Pure pich C. Test for Fats and Ols Name office Solubility test il containing Solubility S Acroientes Olive oil Margarine Ves Муална D. Identify an unknownsample for the presence of Cardrate, Protein, Fats and Ols. Sample amer Test for Cortes Name of Observa Positive Charring tot Mollet Purple ring Positive...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks and complete the questions on the next page FeN2.C.AP 3% H., (Step 3) 6M N OH (Step 4) Heat (Step 5) Fe(OH), (brown solid) Ni(OH)(green solid) (Black solid, Step 6) CO2. JANON (Yellow solution, Step) 1 15M HNO, (Step 7) IM NHACI (Step 8) 15M NH,OH/NH, (Step 9)/Spin (Step 10) 15M HINO, (Step 14) 6M NILOHNH. (Step 15) . fe AKOH) White gel Step...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 2 Physical Properties BP 180-183 °C Brown Liquid C = 77.38 % H = 7.58 % Sodium Fusion Test A portion of the sodium fusion filtrate was treated with ferrous sulfate heated. It was then acidified with dilute sulfuric acid. An intense blue color was observed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed....
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation Chip didn't dissolve some solid on Bottom Solid completely dissolved Chip floated on top of water Floated on top of water Sugar Wax Cooking oil of these solute? 1. What patterns do you observe regarding the polar and non-polar characteristics of these se 2. What effect do you think heating would have on the solubilities of these substances? B. Non-Polar Solvent: Toluene Solute lodine...
What is the empirical and molecular formula ? What is the
molecular weight ?
Computer Unknown # 9 Physical Properties MP 206-210 °C White solid C 77.86 % H=11.76 % Sodium Fusion Test A purtion of the sodium fusion filtrate was treated with ferrous sulfate and heated. It was then acidified with dilute sulfuric acid. No obeervable change was noticed. Another portion of the sodium fusion filtrate was treated with lead acetate. No observable change was noticed. Another portion was...
Acid, bases and buffers
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Litmus (color) Solution Juice (color)values (colbr) no reaction 2.890 Magenta 11.37dark green Red blue no reaction 2.700 Magenta lemon juice soft drink drain cleaner no reaction detergent baking soda no reaction red red no raction 3.530 Purple blue 12.56 no reactionno reaction 8.700 dark green 9.350 teal/green Part B Total Number of rops of HCl(aq) Added DI Water...
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq. NaOH and 5% aq. HCl is suspected of being an amine. What feature of the solubility tests would confirm whether or not it is an amine? Explain. 2. While the effect is generally small enough to he neglected, what variable of laboratory conditions can alter the measured boiling point temperature of the liquid? 3. Match the letter of the functional group to the description...
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