How would your calculated value for the molecular weight of your unknown been affected (high, low,...
Homework Answers
For experiments related to molecular weight determination by
colligative properties, if concentration of solute is less, the
value of the calculated molecular weight will be lesser than
expected.
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How would your calculated value for the molecular weight of your unknown been affected (high, low,...
When determining the melting point of your pure benzophenone, some of the molten material had solidified...
When determining the melting point of your pure benzophenone, some of the molten material had solidified high on the thermometer and wire stirrer. How would your calculated value for the molecular weight of your unknown been affected (high, low, no effect) if this benzophenone failed melt and was not a part of the final mixture in the tube?
explain how would the calculated value of molar mass be affected if the temperature was assumed...
explain how would the calculated value of molar mass be
affected if the temperature was assumed to be 100 when it was
actually was only 90 Celcius
Experiment 8 Questions. 1. Explain how would the calculated value of the molar mass be affected (too high, too low, no effect) if: a) the flask had been left in the water bath for so long that after all the liquid vaporized, some of the vapor escaped and was replaced by air? less...
A Freezing-Point Depression experiment is done using 2 different test tubes to find the molecular weight...
A Freezing-Point Depression experiment is done using 2 different test tubes to find the molecular weight of an unknown mixture. Tube 1 consists of pure Lauric acid, and Tube 2 consists of Lauric acid + an unknown solute mixture. From the calculations of this experiment, the molecular weight of the unknown acid can be found. A) How would the loss of some Lauric acid from Test Tube 1 have affected the calculation of a molecular weight? Would the calculated molecular...
How would your Calculated Value Of The Heat Of Solution Be Affected By The Following Mistakes ? a. Spilling Some Salt On...
How would your Calculated Value Of The Heat Of Solution Be Affected By The Following Mistakes ? a. Spilling Some Salt On The Benchtop While Transferring It To The Caliorimeter, And Being Unable To Sweep All Of It Up And Into The Calorimeter. b. Having a Salt That Does Not Completely Dissolve In The Reaction Mixture. c. Reducing the volume of liquid in the calorimeter to 80.0 mL, and correctly accounting for this in calculation.
4. How would your calculated value of the heat of neutralization be affected by the following...
4. How would your calculated value of the heat of neutralization be affected by the following mistakes? a. The recorded value of AT was smaller than the true value. antolon b. The heat capacity of the calorimeter was neglected.
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of...
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of empty test tube 2.2.6! Mass of test tube plus approximately 10.0 g of benzophenone 33.39 The difference is the mass of benzophenone (solvent) 8 kg Mass of unknown (-1.0 g) 1:09: 48.50°c 42.08. Freezing point of pure benzophenone Freezing point of benzophenone containing the unknown The difference is A fp CO Calculations: (Show set-up with cancellation of units) 1. molality of solution 2. moles...
A 500-g chunk of an unknown metal, which has been in boiling water for several minutes, is...
A 500-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly dropped into an insulating Styrofoam beaker containing 1.00 kg ofwater at room temperature (20.0 C). After waiting and gently stirring for 5.00 minutes, you observe that the water's temperature has reach a constant value of 22.0C.A) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specic heat of...
4. How would the calculated equivalent mass of the unknown acid in this experiment be affected if: (a) The buret was con...
4. How would the calculated equivalent mass of the unknown acid in this experiment be affected if: (a) The buret was contaminated with acid solution? (b) Not all of the unknown weighted acid was transferred to the titration beaker? (c) The volume of distilled water in which the unknown acid was dissolved was not accurately known?
Explain how each of the following would affect the percent sulfate you calculated, i.e., too low,...
Explain how each of the following would affect the percent sulfate you calculated, i.e., too low, too high, no effect. Be specific. 3. You added 15 mL (instead of 10 mL) of 0.25 M BaCI, to your unknown. a. You were in a hurry to get out of lab, so you did not rinse the last traces of solid BaSO, from the reaction beaker into the funnel. b.
Explain what effect the following scenarios would have on the calculated specific heat (i.e. would it...
Explain what effect the following scenarios would have on the calculated specific heat (i.e. would it be calculated artificially high, low, or have no effect). Your explanation should address what variable(s) would be affected by the scenario and how that affects the calculation of specific heat.(1.5pt each) A student accidently dropped the piece of metal on the countertop during the process of transferring it from the boiling water bath to the calorimeter, but was quickly picked up and put into...
explain how would the calculated value of molar mass be
affected if the temperature was assumed to be 100 when it was
actually was only 90 Celcius
Experiment 8 Questions. 1. Explain how would the calculated value of the molar mass be affected (too high, too low, no effect) if: a) the flask had been left in the water bath for so long that after all the liquid vaporized, some of the vapor escaped and was replaced by air? less...
4. How would your calculated value of the heat of neutralization be affected by the following mistakes? a. The recorded value of AT was smaller than the true value. antolon b. The heat capacity of the calorimeter was neglected.
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of empty test tube 2.2.6! Mass of test tube plus approximately 10.0 g of benzophenone 33.39 The difference is the mass of benzophenone (solvent) 8 kg Mass of unknown (-1.0 g) 1:09: 48.50°c 42.08. Freezing point of pure benzophenone Freezing point of benzophenone containing the unknown The difference is A fp CO Calculations: (Show set-up with cancellation of units) 1. molality of solution 2. moles...
Explain how each of the following would affect the percent sulfate you calculated, i.e., too low, too high, no effect. Be specific. 3. You added 15 mL (instead of 10 mL) of 0.25 M BaCI, to your unknown. a. You were in a hurry to get out of lab, so you did not rinse the last traces of solid BaSO, from the reaction beaker into the funnel. b.
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