Advertisements
Advertisements
प्रश्न
State a reason to prove that water is a compound and not a element.
उत्तर
Three reasons are :
- Water has new properties than its constituents [i.e. H2 and O2]. H2 is a combustible gas, O2 gas is a supporter of combustion but water is liquid.
- In water hydrogen and oxygen, elements combine in fixed ratio by weight 1 : 8.
- Components of water i.e. H2 and oxygen can be separated by chemical means e.g. by electrolysis of water.
APPEARS IN
संबंधित प्रश्न
What do you understand by the term ’auto-protolysis’ of water? What is its significance?
Complete the following chemical reaction.
\[\ce{PbS_{(s)} + H_2O_{2(aq)} ->}\] ______
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Complete the following chemical reaction.
\[\ce{MnO^-_{4(aq)} + H_2O_{(g)} ->}\]
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
What is the difference between the terms ‘hydrolysis’ and ‘hydration’?
Why is water used in hot-water bottles?
How the temporary and permanent hardness is removed?
The density of water is maximum at ________.
How can production of hydrogen from water gas be increased by using water gas shift reaction?
Pure water is ______ and it shows no action towards litmus paper.
Polyphosphates are used as water softening agents because they ______.