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pallavi pradeep bhardwaj Grade: 12
        3g of an oxide of a metal is converted into chloride compeletly and it yeilded 5g of chloride.The equivalent wt of metal is
7 years ago

Answers : (2)

Ramesh V
70 Points
										

here the oxidation state of oxygen is -2


lets take metal O.S as +1 or +2 in two cases with its atomic wt. as X


case 1:


for +1 state, its:        M20 + 2Hcl  ----> 2Mcl + H2O


                                    2x+16                  x+35.5


 so, it shld be 3/(2x+16)  = 2*5/(x+35.5)   where x is negative, so its not possible to metal be in +1 state


case 2:


for +1 state, its:        M0 + 2Hcl  ----> Mcl2 + H2O


                                  x+16                    x+72


 so, it shld be 3/(x+16)  = 5/(x+72) 


 which gives x = 66.5


so, the metal is Zinc


its eq. wt = 33


--


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here and we will get you the answer and detailed solution very quickly.We are all IITians and here to help you in your IIT JEE

preparation. All the best.



Regards,

Ramesh


 


                       

7 years ago
sanat
33 Points
										
If we apply POAC(Principle of Atom Conservation) for the first case(ox. state=+1) then a +ve value of x is obtained, while for case 2 x is rightly obtained!
Please clarify.
3 years ago
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