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chemistry sux :(

areebaization

areebaization

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agha saad said:
yar which is not a redox reaction...one option is neutralization other???
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Neutralization (alkali+acids) is not redox as for oxidation or reduction to occur, electrons have to be involved. Either they are lost or gained, and as you probably know, loosing electrons is defined as oxidation and gaining electrons as reduction. If, the substances have already lost or gained electrons and exist as charged particles in solution; they just switch partners. For example, in the classic definition of neutralization, a base contains ( OH- ) ions and an acid contains ( H+ ) ions. If they combine there are no electrons transferred so no oxidation or reduction takes place, and the remaining ions also combine with no electron shifts. Precipitation reactions are exactly the same except that when certain ions in solution combine,( with no electrons exchanged), the substance formed is insoluble and precipitates.
 
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agha saad

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areebaization said:
Neutralization (alkali+acids) is not redox as for oxidation or reduction to occur, electrons have to be involved. Either they are lost or gained, and as you probably know, loosing electrons is defined as oxidation and gaining electrons as reduction. If, the substances have already lost or gained electrons and exist as charged particles in solution; they just switch partners. For example, in the classic definition of neutralization, a base contains ( OH- ) ions and an acid contains ( H+ ) ions. If they combine there are no electrons transferred so no oxidation or reduction takes place, and the remaining ions also combine with no electron shifts. Precipitation reactions are exactly the same except that when certain ions in solution combine,( with no electrons exchanged), the substance formed is insoluble and precipitates.
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oho..thanx hann......yeah INSHALLAH...bas duwa karna maira bhee A aa hee jai..:) but i think no chance....:(
 
Minnie

Minnie

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agha saad said:
yeah m doing it right now...cuz tomorrow is physix atp...!! but m more tensed wid chemistry :(
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i did chemistry. im scared for the mcq's cause thats where i always lose marks. ihave to practise mcqs more. :/ dont worry you'll do good Inshallah :)
chem is not that bad. i kinda like it :p
Physics atp is goin okay. not difficult as such. you doing past papers only?
 
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agha saad

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Minnie said:
i did chemistry. im scared for the mcq's cause thats where i always lose marks. ihave to practise mcqs more. :/
chem is not that bad. i kinda like chem. :p
Physics atp is goin okay. not difficult as such. you doing past papers only?
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hmm yup..wat about physix p1 en p2 hw were they??
 
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