1. If the standard solutions had unknowingly been made up to be 0.0024 M AgNO3 and 0.0040 M K2CrO...
1.
If the standard solutions had unknowingly been made up to be 0.0024 M AgNO3 and 0.0040 M K2CrO4, would this have affected your results? If so, how?
| a. The molar absorptivity for CrO2−4 would have been too large. This would have resulted in a value of Ksp that is smaller than it should have been. The concentrations that are determined using this molar absorptivity would be too small. |
| b. The molar absorptivity for CrO2−4 would have been too small. This would have resulted in a value of Ksp that is larger than it should have been. The concentrations that are determined using this molar absorptivity would be too larger. |
| c. It would not have affected the results. |
| d. The molar absorptivity for CrO2−4 would have been too small. This would have resulted in a value of Ksp that is smaller than it should have been. The concentrations that are determined using this molar absorptivity would be too small. |
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1. If the standard solutions had unknowingly been made up to be 0.0024 M AgNO3 and 0.0040 M K2CrO...
if the standard solutions had unknowingly
1. If the standard solutions had unknowingly been made up tobe 0.0024 M AgNO3 and 0.0040 M K2CrO4, would this have affected your results? Why? 2. If your curvette had been dirty, how would this have affected the value of ksp? 3. Using your determined value of ksp, calculate how manymilligrams of Ag2CrO4 will desolve in 10.0 mL of H2O? 4. The experimental procedure for this experiment has you add 5mL of 0.004 M AgNO3 to 5mL of 0.0024 M...
If the freezing point of the solution had been incorrectly read 0.3 °C lower than the...
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DISCUSSION QUESTIONS 1. If the liquid did not completely vaporize in the experiment, would the ap-...
DISCUSSION QUESTIONS 1. If the liquid did not completely vaporize in the experiment, would the ap- parent molecular weight be larger, smaller, or unchanged compared to that determined if the experiment had been properly performed? Would the error in part (1) have a larger, smaller, or the same effect as the errors that might be made in measuring the temperature of the water in the flask, the barometric pressure, or the volume of the flask? Explain your answer. 2. What...
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1. 200 mL of an aqueous solution contains 0.030 M concentrations of both Pb2+ and Ag+....
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mL of 6.0 x 10-2 M NaCl is added to this solution will a
precipitate form? If so, what will the
precipitate be? The Ksp values for PbCl2 and AgCl are 1.7 x
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E AFTER COMPLETING LAB. ANSWER IN SPACE PROVIDED. Suppose the heat of neutralization had been determined using a glass beaker instead of a polystyrene coffee cup How would the measured value have...
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Modern Experimental Chemistry Chemistry 153 The Iron(III) Thiocyanate Complex Purpose of the Experiment To determine the chemical formula of a complex ion and measure its formation equilibrium constant Equipment Spectro Vis spectrophotometer and LabQuest, cuvette, 25-mL buret (3), ring stand, buret clamp (2), 50-mL beaker (3), small plastic beakers Reagents SCN, as KSCN, 0.00200 M solution Fe; as Fe(NO), 0.00200 M solution and a...
DISCUSSION QUESTIONS 1. If the liquid did not completely vaporize in the experiment, would the ap- parent molecular weight be larger, smaller, or unchanged compared to that determined if the experiment had been properly performed? Would the error in part (1) have a larger, smaller, or the same effect as the errors that might be made in measuring the temperature of the water in the flask, the barometric pressure, or the volume of the flask? Explain your answer. 2. What...
Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier #4 (All unknowns are nonelectrolytes, soi-1) Determination of the freezing point of pure l-butyl alcohol: (Record time-temperature data on the next page) 29.62 1. Mass of empty test tube 2. Mass of test tube and t-butyl alcohol after determination of freezing point of pure t-butyl alcohol 50.25 20.71 3. Mass of t-butyl alcohol Determination of the molar mass of an unknown: (Record time-temperature data...
1. 200 mL of an aqueous solution contains 0.030 M
concentrations of both Pb2+ and Ag+. If 100
mL of 6.0 x 10-2 M NaCl is added to this solution will a
precipitate form? If so, what will the
precipitate be? The Ksp values for PbCl2 and AgCl are 1.7 x
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E AFTER COMPLETING LAB. ANSWER IN SPACE PROVIDED. Suppose the heat of neutralization had been determined using a glass beaker instead of a polystyrene coffee cup How would the measured value have been affected? The heat of combustion of octane, C,H,. can be measured in a way similar to the method youC used to measure the heat of neutralization. The bomb calorimeter is used instead of a coffee cup. The reaction is 2C,H,1)+ 25 O, (g) 16 CO, (g) +...
Chemie Heterogeneous Reaction Chemical reactions may be envisioned in terms of reactants and products and written in the general form A +bB - C +dD Reactants Products The equilibrium constant may be expressed in the form K - LORD up or K, - P2 where [C] represents the molar concentration of Catequilibrium. For a given reaction, the concentrations at equilibrium would have to be determined experimentally. In application, there are practical cases where some of the reactants and/or products do...
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