posted by jessie .
How to prepare 10% w/v nitric acid solution?
Do I just weigh 10g of concentrated nitric acid (65%) and dilute to 100ml with water?
No. No. No.
W/v the v is the volume of solution, not solute.
so you want this:
.10= massnitricacid/volumewater+volume acid.
Now the mass of acid is .65 the mass of the acid concentrate (or .35 water).
So lets some 10PC w/v.
Say we need V of this. So V=volume water+ volumeconcacid
but mass acid= .65*massconcacid.
but if you have the volume of concentrated acid, you need the density.
so if you want 100 ml of the final solution..
solve for ml of conc acid, then add the acid to water (100ml-volumeacid).
always add acid to water.