Question

Shyams teacher told that when dinitrogen and dioxygen

Answer 1

Question 21

The following data are obtained when dinitrogen and dioxygen react together to form different compounds:

Mass of dinitrogen Mass of dioxygen

(i) 14 g 16 g

(ii) 14 g 32 g

(iii) 28 g 32 g

(iv) 28 g 80 g

(a) Which law of chemical combination is obeyed by the above experimental data?Give its statement.

(b) Fill in the blanks in the following conversions:

(i) 1 km = ...................... mm = ...................... pm

(ii) 1 mg = ...................... kg = ...................... ng

(iii) 1 mL = ...................... L = ...................... dm3

Answer

Let us fix 14 parts by weight of nitrogen as fixed weight.

Now let us calculate the weights of oxygen which combine with 14 parts by weight of nitrogen

Sno

No of parts by weight of nitrogen

No of parts by weight of oxygen

14 parts of nitrogen as fixed weight

No of parts by weight of oxygen which combine with 14 parts by weight of nitrogen

1

14g

16g

14g

16

2

14g

32g

14g

32

3

28g

32g

14g

32

4

28g

80g

14g

80

(a) If we fix the mass of dinitrogen at 14 g, then the masses of dioxygen that will combine with the fixed mass of dinitrogen are 16 g, 32 g, 32 g, and 80 g.