SOLUTION: Hi, suppose you need to give a patient 40% potassium in saline, but all you have to hand is 20% in 1 litre (1000ml, how much would you give, Someone said 2 1 litre bags of the 20%

Question 449252: Hi, suppose you need to give a patient 40% potassium in saline, but all you have to hand is 20% in 1 litre (1000ml, how much would you give, Someone said 2 1 litre bags of the 20% saline, but you need half the volume to increase the concentration, would you give 500mls over 2bags of 20% saline?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
1(.20)+x(1.00)=.40(1+x)
.20+x=.40+.4x
.6x=.20
x=.2/.6=.33
I would add 1/3 liter of pure potassium in saline to the litre of 20% saline I already had to make 1-1/3 litres of 40% potassium saline..
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