CBSE Class 11-science Answered
1 mole of ferric oxalate is oxidized by x mole of MnO4- and also 1 mole of ferrous oxalate is oxidized by y mole of MnO4- in acidic medium . The ratio (x/y) is :
(a) 2:1
(b) 1:2
(c) 3:1
(d) 1:3
Asked by Balbir | 30 Jun, 2019, 12:17: PM
Option(a) is correct.
Given:
![Fe subscript 2 open parentheses straight C subscript 2 straight O subscript 4 close parentheses subscript 3 space space plus space MnO subscript 4 superscript minus space rightwards arrow with space space space space space space space space space space space space space on top Fe to the power of 3 plus end exponent space plus space CO subscript 2 space plus space Mn to the power of 2 plus end exponent
FeC subscript 2 straight O subscript 4 space space plus space MnO subscript 4 superscript minus space rightwards arrow with space space space space space space space space space space space space space on top Fe to the power of 3 plus end exponent space plus space CO subscript 2 space plus space Mn to the power of 2 plus end exponent
straight n subscript Fe subscript 2 open parentheses straight C subscript 2 straight O subscript 4 close parentheses subscript 3 end subscript over straight n subscript MnO subscript 4 superscript minus end subscript space equals space 5 over 6 space equals 1 over straight x
straight x space equals space 6 over 5](https://images.topperlearning.com/topper/tinymce/cache/d850633abdd1d59589c32bd6e22b143c.png)
No. of moles are inversally proportional to n-factor.
![straight n subscript Fe open parentheses straight C subscript 2 straight O subscript 4 close parentheses subscript 3 space end subscript over straight n subscript MnO subscript 4 to the power of minus end subscript space equals space 5 over 3 equals 1 over straight y
straight y equals space 3 over 5
Now comma
straight x over straight y equals space 6 over 5 cross times 5 over 3
straight x over straight y equals 2 over 1
straight x colon straight y space equals space 2 colon 1](https://images.topperlearning.com/topper/tinymce/cache/7adb84a1ad801c0a3739902680ab7641.png)
the ration x:y is 2:1.
Answered by Varsha | 01 Jul, 2019, 14:54: PM
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