Get Answers to all your Questions

header-bg qa

The strengths 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)
Option: 1 1.7 and 0.5
Option: 2 0.85 and 0.25
Option: 3 1.7 and 0.25
Option: 4 0.85 and 0.5

Answers (1)

best_answer

Strength of 5.6 volume means that 5.6 is Volume strength.

Volume strength = 11.2 X molarity

\mathrm{\Rightarrow molarity =\frac{5.6}{11.2}=0.5}

Assuming 1 litre solution;
mass of solution = 1000 ml X 1 g/ml = 1000 g
mass of solute = moles X molar mass
= 0.5 mol X 34 g/mol
= 17 gm

\Rightarrow \operatorname{mass} \%=\frac{17}{1000} \times 100=1.7 \%

Therefore, Option 1 is correct.

Posted by

Kuldeep Maurya

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE