1. Starting with a 16M H2SO4, you remove 15ml and you are wanting a 6M solution....
In an experiment, you need to create 275 mL of a 1M solution. You have 2L of a 5M stock solution. Calculate how much stock solution you would need to mix with water to make a 1M solution.You would take mL of the 5M stock solution in a flask and add mL of distilled water.Answers should be numerical (eg, 1, not one)
if you have 380.0 mL of a 0.60 N sodium hydroxide solution and you need 0.20 N solution. how much distilled water do you nees to add?
1: You need to make an aqueous solution of 0.212 M barium hydroxide for an experiment in lab, using a 300 mL volumetric flask. How much solid barium hydroxide should you add? ____grams 2: How many milliliters of an aqueous solution of 0.219 M chromium(III) sulfate is needed to obtain 3.70 grams of the salt?____ml 3: In the laboratory you dissolve 23.1 g of zinc nitrate in a volumetric flask and add water to a total volume of 250 ....
We have a stock solution of W at 1M, and another stock solution of V at 100 mM. you want to make 1L of working solution containing 20 mM of W and 2 mM of V in water. How much ( volume) W, V and water to do you need?
Acid/Base Extraction
1. Provide a flow chart detailing the acid/base
extraction/separation of the compounds shown below. Your answer
must employ the following reagents: methylene chloride,
hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M),
10% sodium bicarbonate (aq). Clearly indicate the product(s) and
layers formed following each step of your separation scheme.
IMPORTANT: p-cresol is soluble in sodium hydroxide solution but
insoluble in neutral water or sodium bicarbonate solution. 2-
ethylbenzoic acid is soluble in both sodium hydroxide and...
(2) Find the oxidation numbers of the bold-labelled atoms in the following species: (a) CrF4 (b) UO3 (c) HReO4 (d) FeO42- (e) BrO3- (f) PH4+ (3) Suppose you have a 2.30 M solution of rubidium hydroxide and you are asked to make up 500.0 mL of 5.00 x 10-3M rubidium hydroxide. How much of the stock solution do you need? (4) How many grams of sodium formate (NaCHO2) do you need to make 250.0mL of 7.50 x 10-3M solution? (5)...
You have stock solution of 10M Tris, pH 8.0 and 5 M NaCl. You want to make a one liter buffer of 1M Tris buffer and 50 mM NaCl. How would you do that?
You want to determine the concentration of acid in a particular solution. To this end, you decide to titrate the acid with a standardized sodium hydroxide solution. You quickly throw together an approximately 0.1 M NaOH solution, and then you realize you need to know the exact concentration of this solution before you can use it for anything meaningful. 1. Using an acid-base titration, 30.65 mL of your NaOH solution were needed to neutralize 0.6923 g of KHP (potassium hydrogen...
Find the concentration (molarity) of an aqueous solution prepared by dissolving 10g of NaOH(s) in 100mL of water. Find the concentration (molarity) of a NaOH solution that contains 5g of NaOH and 1000 mL of water. What is the new concentration when we add 1L more of water to the prepared solution in question (2).? If you have 10 ml of a 5M solution of NaOH, how many mol of NaOH you have? How many mol of Na+ you have?...
You require a solution containing 127 mM of sodium hydroxide. You have 37 g of sodium hydroxide, how many mL of water do you need to add (whole number answer)?