Question

20 mg of a salt was dissolved in 1 point
water and the solution was
diluted to 100 cm?. Then, the
concentration of this solution is
ppm. [ Hint : 1 ppm = 1
mg.dm-3 & 1 dm3 = 1000 cm3]. *
2.
20
0 200
O2000
Thistis a required question​

Answer 1

Answer:

given :- 20 mg of salt or sodium chloride (NaCl) and water a point is x°c distribute in 100 ml.

according to question

as we know that 1 ppm = 1mg

then,

20mg × x°c = 100ml

0.02 ml × x°c = 100ml

= 100 × 100 / 2

= 100 × 50

= 500 Ans.