Question

In: Chemistry

You are making a stock salt solution by diluting 0.7563g of salt to 500mL with water....

You are making a stock salt solution by diluting 0.7563g of salt to 500mL with water.

a) What is the analytical concentration (in mol/L) if the salt is sodium chloride?

b) What is the analytical concentration of the solution (in mol/L) if the salt is Mohr's Salt?

c) How would you prepare 0.5L of -2x10-4 M and -4x10-5 M solutions from your Mohr's stock solution? Round to reasonable aliquot sizes, keeping in mind common pipette volumes.

d) Convert the concentrations in c. to ppm. Assume the density of the solution is that of the pure solvent.

d)

Solutions

Expert Solution

Comment if any problem


Related Solutions

A company is diluting concentrated 80% glycerol and diluting it to 6 wt% glycerol with water...
A company is diluting concentrated 80% glycerol and diluting it to 6 wt% glycerol with water to produce for use in the pharmaceutical industry. (a) What are the average molecular weights of the starting and product glycerol solutions? (b) What are the mole fractions of the initial and final glycerol solutions? (Assume the density of water is 1 g/cm3 and the specific gravity of glycerol is 1.26. )
An EDTA solution was prepared by dissolving the disodium salt in 1l of water. It was...
An EDTA solution was prepared by dissolving the disodium salt in 1l of water. It was standardized using 0.5063 gram of primary standard CaCO3 and consumed 28.50 ml of the solution. The standard solution was used to determine the hardness of a 2L sample of mineral water, which required 35.57 ml of EDTA solution. Express the analysis in terms of ppm CaCO3 ? Answers. 316 ppm
A tank contains a mixture of water and salt, and at all times the solution is...
A tank contains a mixture of water and salt, and at all times the solution is kept will mixed. At time t = 0 there is 10 Liters solution in the tank, with no salt. However, being poured into the tank is a solution containing 2 grams of salt per liter, and it is entering at a rate of 5 liters per minute. Simultaneously we drain our tank at a rate of 3 liters per minute. Find the concentration of...
If you had a salt-water aquarium that needs salt water, could you figure out how much...
If you had a salt-water aquarium that needs salt water, could you figure out how much sea salt to add to address a salt deficit? Assume that salt is the only solute in the seawater. You may need: average ocean salinity = 35g/L Average density of ocean = 1.025g/ml 1L = 0.26 gal a) What is the Molarity, M, of the ocean? b) What is the molality, m, of the ocean? c) What is the mole fraction, X, of salt...
Start with a 1040.0 ppm Stock Zn solution. Prepare control 1 by diluting 2.00 mL of...
Start with a 1040.0 ppm Stock Zn solution. Prepare control 1 by diluting 2.00 mL of Stock Zn solution in a 200.0 mL volumetric flask and dilute to the mark. Prepare control 2 by diluting 2.00 mL of control 1 into a 100.0 mL volumetric flask. What is the Zn concentration (ppm Zn) in control 2?
"Starting with a 1.35 M HCl stock solution, five standard solutions are prepared by sequentially diluting...
"Starting with a 1.35 M HCl stock solution, five standard solutions are prepared by sequentially diluting 5.00 mL of each solution to 100.0 mL. What is the concentration of the final solution?"
You wish to determine the amount of lead in a drinking water sample (500mL). It is...
You wish to determine the amount of lead in a drinking water sample (500mL). It is possible that sulfate in the sample (as well as other ions) will produce a matrix effect that will compromise the analysis, so you use a standard addition calibration method. You transfer 15 mL of your sample into each of five 50 mL volumetric flasks. You add the following volumes of a 5 ppm lead standard to the 5 flasks : 0, 5, 10, 15,...
If the temperature drops when a salt is dissolved in water. Its heat of solution is...
If the temperature drops when a salt is dissolved in water. Its heat of solution is Select one: a. exothermic b. positive c. cold d. negative
Write the molecular formula of a salt that, when dissolved in water, produces the solution with...
Write the molecular formula of a salt that, when dissolved in water, produces the solution with an basic Ph?
What mass of water would need to be added to 4.25g salt to make the solution...
What mass of water would need to be added to 4.25g salt to make the solution 28% salt?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT