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3 millimoles of k2cr2o7 reacts completely with 4.5 millimoles of X^n+ to give Xo3^- and cr^3+. the value of n is?

3 millimoles of k2cr2o7 reacts completely with 4.5 millimoles of X^n+ to give Xo3^- and cr^3+. the value of n is?

Grade:11

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
6e- +Cr2O7^2- -----2Cr+3
X^n+ -----Xo3- +5-n
now
3*6*1000=(5-n)*4.5*1000
n=1
because milliequivalent is mole*valency factor*1000
the value of n s equal to1

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