Question

In: Chemistry

For each of the circumstances described below, discuss how it might affect the calculated % yield...

For each of the circumstances described below, discuss how it might affect the calculated % yield and briefly explain why
a. A student does not filter the solution before proceeding to reaction with H2SO4
b. in order to dry the alum product faster to obtain a final mass, the student heated the beaker containing the solid on a hot plate for 20 minutes

inorganic synthesis: Preparation of potassium Alum lab

Solutions

Expert Solution


Related Solutions

In the space provided below, discuss how each of the following might be affected by the...
In the space provided below, discuss how each of the following might be affected by the proposed monetary and fiscal policy responses to Covid-19. a. Inflation in the US (Use equation of exchange to augment answer): b. Term structure of interest rates: c. US, European, and Emerging Market equities: d. US dollar:
1) Determine how the following error would affect calculated the percent yield of alum. (increase, decrease,...
1) Determine how the following error would affect calculated the percent yield of alum. (increase, decrease, no effect). Briefly explain. 1a. The Aluminum foil did not completely react. 1b. Alum sample was left in the beaker and not transferred to the filter paper. 1c. Alum Sample was not dried completely in the oven. 2) A piece of an aluminum can was cut into small pieces. Then 0.422g of the pieces from the can was used to prepare potassium alum according...
how do each of the following affect the calculated volume of hydrogen gas at stp? A:...
how do each of the following affect the calculated volume of hydrogen gas at stp? A: The strip of magnesium used in the experiment was partly oxidized and it was not cleaned before the strip was bent and placed in the buret. B: The bent strip of magnesium dropped out of the end of the buret and some bubbles of H2 from the reaction were not trapped in the buret. C: you did not correct the bariometric pressure for the...
Draw and label a line that corresponds to the inverted yield curve. Under what circumstances might...
Draw and label a line that corresponds to the inverted yield curve. Under what circumstances might the economy experience an inverted yield curve. Why does an inverted yield curve often portend a recession?
1. For each of the following circumstances, indicate wheter the calculated molarity of NaoH would be...
1. For each of the following circumstances, indicate wheter the calculated molarity of NaoH would be lower, higher, or unaffected. Explain your answer in each case. a. The inside of the pipet used to transfer the standard HCl solution was wet with water. b. You added 40 mL of water to the titration flask rather than 25 mL. c. The buret, wet with water, was not rinsed with NaOH solution before filling the buret with NaOH with solution. d. Five...
1. Clearly and carefully EXPLAIN how each of the following errors will affect the calculated percent...
1. Clearly and carefully EXPLAIN how each of the following errors will affect the calculated percent ion in your known (higher, lower, not affected). a) Some of the KMnO4 solution decomposed between the time you standardized it and the time you used it in your determination of iron. b) Your buret leaked during the permanganate-iron titration and some of the solution spilled onto the lab bench. c) You did not stop the titration until the solution in the flask was...
Explain how each of the following developments might affect the supply of money, the demand for...
Explain how each of the following developments might affect the supply of money, the demand for money, and the nominal interest rate, if at all. Illustrate each answer with a diagram of the supply and demand for money. a) The Fed’s bond traders buy bonds in an open market operation. b) A bank panic hits the nation. People try to take all the money out of their checking accounts so they can hold it as cash. c) Rising oil prices...
Explain how each of the following developments might affect the supply of money, the demand for...
Explain how each of the following developments might affect the supply of money, the demand for money, and the nominal interest rate, if at all. Illustrate each answer with a diagram of the supply and demand for money. a) The Fed’s bond traders buy bonds in an open market operation. b) A bank panic hits the nation. People try to take all the money out of their checking accounts so they can hold it as cash. c) Rising oil prices...
1) For each change made to a protein solution, how might it affect the interactions that...
1) For each change made to a protein solution, how might it affect the interactions that are involved in a protein's shape? 2) What is the difference between precipitation of a protein and its denaturation? How might you tell the difference?
Explain how each of the following statements might affect the layout of process equipment:
Explain how each of the following statements might affect the layout of process equipment:A specific pump requires a large NPSH.The flow of liquid from an overhead condenser to the reflux drum is gravity driven.Pumps and control valves should be located for easy access and maintenance.Shell-and-tube exchanges may require periodic cleaning and tube bundle replacement.Pipes located at ground level present a tripping hazard.The prevailing wind is nearly always from the west.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT