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Any Type of Doubts in ENg Phy Chem Bio or Math....Ask me here!!!

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iron (ii ) ions in fe0 react with oxygen to form fe2O3 ?which statement about the iron is correct ?
1. iron (ii) ions are oxidised because they gain oxygen
2. iron ( ii) are reduced because they lose oxygen
are oxidsed because they gain oxygen
are reduced because they lose oxygen ?
which one is it, and how to find the answer ?
 
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iron (ii ) ions in fe0 react with oxygen to form fe2O3 ?which statement about the iron is correct ?
1. iron (ii) ions are oxidised because they gain oxygen
2. iron ( ii) are reduced because they lose oxygen
are oxidsed because they gain oxygen
are reduced because they lose oxygen ?
which one is it, and how to find the answer ?[/quo
The answer is A since the number of oxygen atom increases from FeO to Fe2O3
 
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Thnks , btw i was just confused because oxi is loss of electrons, and i thought that for i.e 2cu---> cu2 since it loses electrons, however i got it wrong, is oxi basically the adding of electrons ? so if its 2X----> its gonna be x2 ?
 
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i have a few doubts... plz answer em asap!
 

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Calculate the amount fr product formed per unit time.....or calculate the usage of product per unit time
The reaction is 2NO + O2 --> 2NO2. If you see, all the chemicals are gases... I only know that NO2 is brown in colour and the rest of the gases are colourless... so how to calculate the amount fr product formed per unit time.....or calculate the usage of product per unit time...???? The question asks for the practical details and procedure...
 
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