solution

To what extent must a given solution containing 40mg AgNO3 per ml be diluted to yield a solution containing 16 mg AgNO3 per ml?

7 Answers

106
Asish Mahapatra ·

40mg AgNO3 per ml means 80mg AgNO3 per 2 ml.
16 mg AgNO3 per ml means 80mg AgNO3 per 5 ml.
Hence we need to add 3 ml of water with every 2ml of solution

3
msp ·

asish u r rong with ur answers

1
▬●๋•kể álwáýک● ·

........oop..but i also got d same answer....1.5 ml of water per ml soln..
...but method iz different ..
as NV = constant.
N1V1 = N2V2
0.2353 V1 = 0.0941(V1+V)
=> 2.5 = 1ml + V / 1ml
=> V = 1.5ml
.[2]..[7]..[12]

1
▬●๋•kể álwáýک● ·

y...? [7]..
NV = constant...itz dilution law,....den y not i use it..?[7] [2]

39
Dr.House ·

if u have a law u cant use it everywhere. like here u cant use E=MC2

106
Asish Mahapatra ·

b555 pls explain y it can't be used? does it have anything to do with complexes?
y did u delete ur post?

39
Dr.House ·

frankly speaking i got the idea because sankara said the answer is wrong, otherwise i would have done the same way, in between u guys try my math questions na.

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