Get Answers to all your Questions

header-bg qa

What is the ratio of masses of oxygen that combine with a fixed mass of Hydrogen in water and Hydrogen Peroxide?

  • Option 1)

    1 : 2

  • Option 2)

    2 : 1

  • Option 3)

    2 : 3

  • Option 4)

    3 : 2

 

Answers (1)

As we learnt

 

Law of multiple proportion -

If two elements can combine to form more than one compund, the masses of one element that combines with a fixed mass of other element are in ratio of small whole numbers.

- wherein

H_{2} + \frac{1}{2}O_{2}\rightarrow H_{2}O

2g        16g          18g

H_{2} +O_{2}\rightarrow H_{2}O_{2}

2g        32g        34g

masses of oxygen combining with a fixed mass of hydrogen have ratio 16:32 => 1:2

 

 

 

One mole of water has 2g hydrogen & 16g oxygen.

Similarly, one mole of hydrogen peroxide has 2g of hydrogen and 32 g of oxygen 

\therefore the ratio = \frac{16g}{32g} = \frac{1}{2}

 


Option 1)

1 : 2

Correct

Option 2)

2 : 1

Incorrect

Option 3)

2 : 3

Incorrect

Option 4)

3 : 2

Incorrect

Posted by

Vakul

View full answer

JEE Main high-scoring chapters and topics

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