JEE PYQ: Hydrogen Question 11
Question 11 - 2020 (03 Sep Shift 2)
The strength of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M), respectively, are: (Take molar mass of hydrogen peroxide as 34 g/mol)
(a) 1.7 and 0.5 (b) 0.85 and 0.25 (c) 1.7 and 0.25 (d) 0.85 and 0.5
Show Answer
Answer: (a)
Solution
Molarity $= \frac{5.6}{11.2} = 0.5$ M. %(w/w) $= \frac{0.5 \times 34}{10} = 1.7$.