Homework Answers
Q1.
Ksp = 9*10^-12 approx
so
Ag2CrO4 <-> 2Ag+ + CrO4-2
Ksp = [Ag+][CrO4-2]
let 1 mol of salt be "S"
so
[Ag+] = 2S, CrO4-2 = S
Ksp = (2S)^2(S)
9*10^-12 = 4*S^3
S = ((9*10^-12)/(4)) ^(1/3)
S = 1.3103*10^-4
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It's part k and calculation 0.4067×0.4067=0.165 also I dont understand questions 1-4 k. Calculate the Ksp...
It's part k and calculation 0.4067×0.4067=0.165
also I dont understand questions 1-4
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POST-LABORATORY QUESTIONS student analyzed a saturated CaF2 solution by the ion-exchange chromatography/titration method and found that [Ca] 2.14 x 10 M. Write out the expression for Ksp of CaF and determine the numerical value of Ksp Suppose a student overtitrates the eluent from the CaSO, experiment (that is, she titrates to a persistent deep pink endpoint). Will the calculated value of Ksp be too high, too low, or unaffected? Explain. 2. 3. The value of Kp for lead (lIl) chromate...
Can someone help me solve these General chemistry questions???
thank you!
The literature value for the Ksp of zinc oxalate is 2.7 x 10".Calculate % error comparing your Ksp to the literature value? Over the years the class average for the Ksp for this experiment has been 1.19 x 107. Calculate the % error comparing your Ksp to the average class value. 3. Based on the literature value what is the molar solubility (Ⓡ) of zinc oxalate? 4. What would...
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can someone help me solve these problems ?
Post-Laboratory Questions 1 What procedural change for this experiment would be necessary if the solubility of the s wew initialy determined at 10 C, followed by solubility determinations at 20 C. 35 C, , and 80 C 2. Use the information in Figure 1 to determine the temperature at which 10.0 g KNO, dissolved in 12.5 mL of H:O would be a saturated solution 3. While transferring the weighed salt to the...
Muyuulin (1JJ. Part III: Determination of a Solubility Product In Part Ill you will prepare a saturated solution of silver carbonate (Ag2CO3) and deten solubility product constant of Ag2CO3. Ag2CO3(s) = 2 Agt(aq) + CO32-(aq) (17) In making the solution, 1.0 mL of 0.10 mol/L AgNO3 will be added to specified volume mol/L Na2CO3. The limiting reagent in this reaction will be the silver ions. Use of an excess an of anion allows for a relatively simple calculation of the...
Determination of Ka and Identification of an Unknown Weak Acid Post-lab Question 1. Suppose that a student performing this experiment mistakenly calibrated the pH meter using pH 8 buffer instead of pH 7 buffer. As a result of this error, all of the student's pH readings were too low. a) Would this error have affected the calculated molar mass of the unknown acid? Briefly explain. b) Would this error have affected the experimentally determined pKa of the unknown acid? Briefly...
Circle the questions that are to be answered 1. Part A.2 Suppose some of the solid calcium hydroxide is inadvertently transferred along with the supernatant liquid for analysis Will more, less, or the same amount of hydrochloric acid titrant be used for the analysis in Part A.6? Explain b Will this inadvertent transfer increase, decrease, or have no effect on the cakculated solubility product for calcium hydroxide? Explain c Will this inadvertent transfer increase, decrease, or have no effect on...
It's part k and calculation 0.4067×0.4067=0.165
also I dont understand questions 1-4
k. Calculate the Ksp of KHP in 0.5 M KCl solution. Is there a difference between the Ksp in 0.5 M KCl and the Ksp in purified water (calculation d)? [K] = [HP] = - Calculation Ksp = D=0.165 4a. Look up the Ksp for Mn(OH)2 and provide the reference: 1.6 X10 reference: /.6 X10-13 Reference b. The pH of a saturated solution of Mn(OH)2 is 9.90. Calculate...
i need all
Post Lab Questions: type in your answers to the following questions Determine what effect the following errors would have on the value for the mass percent water for your hydrate 1. The hydrate was not heated long enough to drive off all the water a. This error will increase decrease leave unchanged the mass in grams for the suminum Eproma after heating b. The error for mass of the aluminum dish Epsom salt after heating that you...
45 THE TITRATION OF VIR EXPERIMENT 8 REPORT SHEET Name Section Date Attach your completed Post-Lab Questions to this Report Sheet to hand in next week. INTRODUCTION By titrating vinegar with a standardized solution of sodium hydroxide, the experimental % acetic acid in the vinegar was determined and compared to the manufacturer's reported value. DATA 5% acetic acid on vinegar Trial 1 Trial 2 Trial 3 Volume of Vinegar Used (mL) Mass S Vinegar Reported on Bottle Concentration of NaOH...
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