50% acetonitrile solutio means 100 ml of the solution contains 50 ml of acetonitrile. i.e.
For 100 ml solution requires 50 ml of Acetonitrile
So, 10 ml solution will require 50*10/100 = 5 ml of acetonitrile
Therefore, to make 10 ml of 50% Acetonitrile , we would need 5 ml of Acetonitrile and remaining 5 ml of solvent (H2O or any other).
If you have 14ml of a solution of 15% KOH and want to make 10ml of a 9% solution, how would you prepare the solution? You would add ml of the 15% KOH to a graduated cylinder and add ml of water.Answers should be numerical (eg, 1, not one)
7. (a) When you try separating an unknown mixture by
reversed-phase chromatography with 50% acetonitrile/50% water, the
peaks are too close together and are eluted in the range k = 2-6.
Should you use a higher or lower concentration of acetonitrile in
the next run?
(b) When you try separating an unknown mixture by normal-phase
chromatography with 50% hexane/50% methyl t-butyl ether the peaks
are too close together and eluted in the range k = 2-6. Should you
use a...
How would you prepare a 2.5m solution of HNO3 from 10mL of 14m HNO3 ?
In a titration of 50 mL of 0.15M NH3 with 10mL of 0.4 M HCl would the pH be acidic or basic? please explain
How would you prepare a 1:500 dilution? You cannot use more than 10mL per tube.
Grignard Reaction - What would happen if you mix Phenyl magnesium bromide with acetonitrile. If you could also show an arrow pushing mechanism that would be appreciated as well.
Rank the relative nucleophilicity of halide ions in acetonitrile solution. How is acetonitrile classified? a polar aprotic solvent a polar protic solvent
How would you make up 2.5L of 5N KOH? (VALENCE 1) How would you make up 50mL of 3.5 N H3PO4? How would you make up 7000mL of 1N HCL?
show how you would make this compound...
2. Show how you would make this compound by a malonic ester synthesis or an acetoacetic acid synthesis. 4-methylhexanoic acid
In chemistry, how come in some volumetric experiments it is preferable to dispense at least 10mL and less than 50 mL of a reagent from a buret? Why is it more preferable than delivering a volume that is more than 50mL or less than 10mL?