IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

sonali

sir

i m confused wwith this mole concept.when i appear exams i m unable to attempt the questions regarding mole concept.plz help me.

magiclko

Its too simple sonali, just rem'ber the basic formulas, n u'll get thru the questions , they r not too difficult. go thru all the examples of RCM, n then solve them on your own, n u'll find ur concepts much better!!!

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Life's tuff but m tuffer.....

frenied

well ill define the mole for u.maybe that will help u.1 mole of any substance is that amount of that substance which contains 6*10^23 units of that substance..like if u have 1 mole of pages it contains those many no. of pages.1 mole of sweets=6*10...sweets.so 1 mole of molecules is like a collection of 6*10...molecules..and when i say amount it can be anything-like it may be amount in litres(volume)or amount in grams(weight).hope thats it..and remember in a chemical reaction its the moles that participate and not atoms.like 1 mole of N2 reacts with 3 Moles of H2 to produce 2 MOLES of NH3.and 1 mole of any substance weighs=its molecular/atomic weight(compound/atom) and occupies 22.4 litres at NTP.so u get the formulas quite naturally.u neednt mug them up. like if u have w grams of a substance
then
1 mol=Molevular weight(=M say)
ie When wt. is M mol=1
thus by unitary method
when weight is w mol=w/M.

frenied

well ill define the mole for u.maybe that will help u.1 mole of any substance is that amount of that substance which contains 6*10^23 units of that substance..like if u have 1 mole of pages it contains those many no. of pages.1 mole of sweets=6*10...sweets.so 1 mole of molecules is like a collection of 6*10...molecules..and when i say amount it can be anything-like it may be amount in litres(volume)or amount in grams(weight).hope thats it..and remember in a chemical reaction its the moles that participate and not atoms.like 1 mole of N2 reacts with 3 Moles of H2 to produce 2 MOLES of NH3.and 1 mole of any substance weighs=its molecular/atomic weight(compound/atom) and occupies 22.4 litres at NTP.so u get the formulas quite naturally.u neednt mug them up. like if u have w grams of a substance
then
1 mol=Molevular weight(=M say)
ie When wt. is M mol=1
thus by unitary method
when weight is w mol=w/M.

arun-rashi

key to develop in mole concept is practice.dont follow the methods of book apply urself only.importent concept are molerity,normality,molality.strength ,strength of H2O2,available chlorine,olium sample,hardness of water,mass mass relationship,mass volume relationship .study good books like bahadur,r c mukerje,tondon,r k gupta etc

itarsikings

hi suniye mole concept bahut easy hai just basic concept dimag mein rakhiye aur question kariye
phele easy question try kariye

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