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ms805
Oxidation numbers

Hi im a mature student would someone have solutions to page 36 of workbook chemistry live balancing oxidation numbers would appreciate help please A to I want to check if im doing them right


4 Comments
Mohamaad
Mohamaad
check the back of the workbook for solutions :grimacing:
ms805
ms805
i did that chapter is not in
rb99
rb99
work from right to left of the equation, oxygen always has and oxidation number of -2 unless with flourine. the oxidations numbers must match the charge on the compound. if theres no charge it must = 0. +2 = +2 etc. eg H2O O= -2 H = +2 Fe3+ = 3+ Cr2O7 O = -2x7 = - 14 there is a charge of 2- so Cr = 12
ms805
ms805
thanks
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