Question

A 250 mL flask contains a 8.0% (m/v) nitric acid solution. Which TWO of the following ratios are NOT equivalent to the concentration? Select one or more: 8g HNO/100 mL soln 20 g HNO3/250 mL soln 80 g HNO/1 L soln 40 g HNO,/0.50 L soln 8 g HNO/1 mL soln 80 mg HN0/1 mL soln 0.08 g HNO/1 mL soln 8 g HNO3/1 L soln

Answer 1

Fomula :- mass of solule x100. mass) percent ( volum = volume of solution (ml) we know the im % iob nitric acid solution. (m)% = 8.0% 8.0d, mass ob soluta ng X100 volume ob sdu bon (me;' mass at 8.0 100 mass of solute 19 volume of solution ImL) mass of solute (8) volume of sciebs om (m2) 0.08 - The above ratio equals to 0.08 so All the given rahos must be equal to this value of not equal, that ratos are not equivalent to the above (8.0.1) concentration.

- so let we check. 0 8 g HNO3 = 10omh soln 0.08 20 g = 0.08 250 ml C 08 = 0.08 76 0001 bon 40 g 20.08 1 OSTO 500 mL 89 Iml 80 mg B 80'O ImL I ml © 0.089 - 0.08 0.08 0089 TML 89 89 sy 1000 mL =0.008 v Any 89/ m f og ratios are not equivalent to Hue concentrabon Hat en in question.