Question

10 gm of hydrogen and 64 gm of oxygen are mixed in a vessel and exploded. How many grams of water is produced??

Answer 1

Answer:

First we see reaction by which form water

2H2+ O2--->2H2O

here we see 2mole hydrogen react with 1mole Oxygen form two mole water

we have

10gm hydrogen =5mole hydrogen

64gm Oxygen =2mol mole oxygen

we know according to above reaction

4gm hydrogen react with 32gm oxygen

so,

10gm hydrogen react with 80gm oxygen

but we have given amount of oxygen only 64 gm it means Oxygen is here limiting reagent .

now

all oxygen reat then 8gm hydrogen react and form 4mole of water .

hence option(c) is correct

Answer 2

Answer:

8 gram of water is produced.

Explanation:

Ratio of oxygen to hydrogen by mass is 8:1.

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