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Asked by ntg432000 | 25 Mar, 2019, 21:48: PM
answered-by-expert Expert Answer
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space C u space rightwards arrow space C u to the power of plus 2 end exponent space plus space 2 e to the power of minus space space space space space space space space space E to the power of 0 space equals space minus 0.34 V space space space space space space space space space minus left parenthesis 1 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space N O subscript 3 to the power of negative space space end exponent space plus space 3 e to the power of minus space space rightwards arrow space space space N O space space space space space space E to the power of 0 space equals space plus space 0.96 V space space space space space space space space space minus left parenthesis 2 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space N O subscript 3 to the power of minus space space space space plus space e to the power of minus space space rightwards arrow space space N O subscript 2 space space space space space space E to the power of 0 space equals space plus space 0.79 V space space space space space space space space space space space minus left parenthesis 3 right parenthesis A f t e r space b a l a n c i n g space t h e space c h a r g e s space w e space g e t space t h e space n e t space c e l l space r e a c t i o n space w h i c h space i s space minus space 2 C u space plus space space 2 N O subscript 3 to the power of minus space space rightwards arrow space space 2 C u to the power of plus 2 end exponent space space space space plus space space N O space space plus space N O subscript 2 space end subscript space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space minus left parenthesis 4 right parenthesis S i n c e space F r e e space e n e r g y space i s space a n space a d d i t i v e space f u n c t i o n space s o space w e space c a n space w r i t e space minus n subscript c e l l end subscript F E to the power of 0 subscript c e l l end subscript space equals n subscript 1 F E to the power of 0 subscript 1 space plus space n subscript 2 F E to the power of 0 subscript 2 space plus space n subscript 3 F E to the power of 0 subscript 3 P u t t i n g space t h e space v a l u e s space w e space g e t comma space E to the power of 0 subscript c e l l end subscript space equals space fraction numerator 4 cross times left parenthesis negative 0.34 right parenthesis space plus 3 cross times 0.96 space plus space 0.79 over denominator 4 end fraction space equals space 0.5775 V A p p l y i n g space N e r n s t space e q u a t i o n space w e space k n o w comma E to the power of 0 subscript C e l l end subscript space equals space minus fraction numerator 0.0591 over denominator 4 end fraction space L o g fraction numerator left square bracket N O subscript 3 to the power of minus right square bracket squared over denominator left square bracket C u to the power of plus 2 end exponent right square bracket space P subscript N O end subscript space cross times P subscript N O subscript 2 end subscript end fraction space equals space 0.5775 S o l v i n g space f o r space space left square bracket N O subscript 3 to the power of minus right square bracket space w e space g e t space o p t i o n space 3 space a s space a n s w e r space space space left curly bracket T a k e space a n t i log space f i n a l l y space t o space c a l c u l a t e space c o n c e t r a t i o n right curly bracket
Answered by Sumit Chakrapani | 26 Mar, 2019, 22:01: PM

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