Question

if 30 ml of H2 and ,20 ml of O2 reacts to form water,what is left at the end of the reaction

​

Answer 1

Answer:

1ml of H

2

reacts with 0.5 ml of O

2

to form 1 ml of water.

When 30 ml of H

2

will react with 15 ml of O

2

to form water it can be represented in a balanced chemical reaction as:

0

30

H

2

(g)

+

(20−15)

20

2

1

O

2

(g)

→

30

0

H

2

O(g)

So at the end of the reaction,30 ml of water and 5 ml of O

2

and 10 ml of H

2

will be left.

Hence, the correct option is A and D

Answer 2

Answer:

1ml of H

2

reacts with 0.5 ml of O

2

to form 1 ml of water.

When 30 ml of H

2

will react with 15 ml of O

2

to form water it can be represented in a balanced chemical reaction as:

0

30

H

2

(g)

+

(20−15)

20

2

1

O

2

(g)

→

30

0

H

2

O(g)

So at the end of the reaction,30 ml of water and 5 ml of O

2

and 10 ml of H

2

will be left.