captainC11
Harmless
Posts: 8
Registered: 2-11-2018
Member Is Offline
|
|
Working out concentration
If a solution of 50ml weighs 59.44g in water and water weighs 50g at 50ml what will the percentage be of the solution eg 55 percent etc?
|
|
|
Ubya
International Hazard
Posts: 1231
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
not that easy, you need to know what is the solution first, liquid volumes are not additive (for example 50ml ef ethanol plus 50 ml of water doesn't
give a 100ml solution )
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
CharlieA
National Hazard
Posts: 645
Registered: 11-8-2015
Location: Missouri, USA
Member Is Offline
Mood: No Mood
|
|
What does "weighs 59.44 g in water" mean?
|
|
|
Sigmatropic
Hazard to Others
Posts: 307
Registered: 29-1-2017
Member Is Offline
Mood: No Mood
|
|
For most acids there are charts where one can look up what density corresponds to what concentration. the last pages of Vogel's practical organic
chemistry have several tables.
Alternative is to make such a chart yourself.
Sometimes though this data is available online.
Also as soon as you know the density of a saturated solution and how many g / 100 mL water (not the same as %w/v!) a saturated solution is you could
assume linearity and calculate your concentration based on density.
Or to take say 10 mL and boil that dry.
|
|
|
captainC11
Harmless
Posts: 8
Registered: 2-11-2018
Member Is Offline
|
|
What I mean if 50ml of this solution weighs 59.44 what’s the concentration . The solution is acid and water
Cheers
|
|
|
Ubya
International Hazard
Posts: 1231
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
If I have a shopping bag and it weights 3kg how many apples are in there?
This is how your question sounds. You CAN'T know the concentration with only volume and weight data (aka density), 30% HCl has not the same density as
30% sulphuric acid or acetic acid. If you still don't want to tell WHAT acid is in your solution we simply can't help.
Cheers
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
