Advertisements
Advertisements
Question
How does it occur in the free state and in the combined state.
Advertisements
Solution
Water occurs in free state : In the form of ice, snow, frost
As – river water, lake water, sea water, spring water
As – water vapour, clouds, mist, fog
In combined state : In plants and animals, in hydrated salts i.e., MgCl2.6H2O and in certain minerals, milk, dry cereals and in green vegetables.
APPEARS IN
RELATED QUESTIONS
What do you understand by the term ’auto-protolysis’ of water? What is its significance?
Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.
Complete the following chemical reaction.
\[\ce{CaO_{(s)} + H_2O_{(g)} ->}\]?
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Complete the following chemical reaction.
\[\ce{AlCl_{3(g)} + H_2O_{(l)} ->}\] ?
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Complete the following chemical reaction.
\[\ce{Ca_3N_{2(s)} + H_2O_{(l)} ->}\] ?
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.
Give a balanced equation for the following conversion:
Iron to triiron tetroxide using steam.
How can production of hydrogen from water gas be increased by using water gas shift reaction?
Write a short note on the catalytic nature of water.
Write the chemical equation for the production of water when zinc reacts with sulphuric acid.
