Asked by Jake

How many milliliter of conc. HNO3 would be necessary to prepare 500ml of 20% of HNO3 solution?
Answered by DrBob222
First calculate the percent HNO3 in conc HNO3. Do you have the percent? Most concn HNO3 is 68% by weight HNO3.
Then
500 mL x 0.20 = ?mL x 0.68.
Answered by Jake
Conc hno3 is not given.
Answered by DrBob222
You MUST know how strong it is in the bottle; else you don't have enough info. Concd HNO3 sold commercially is 68-70% by weight. It says that on the bottle. That's why I gave you the number in my response.
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