Two solutions for balancing a chemical equation? [closed]








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$$\ce{6H2O2 + 2N2H4 → 2N2 + 10H2O + O2}$$


$$\ce{4H2O2 + N2H4 → N2 +6H2O + O2}$$


Which equation from above is correctly balanced? They all seem to be balanced but which one is correct?




All your equations are correctly written. But look !


The simplest equation would be $\ce{N2H4 + 2 H2O2 -> N2 + 4 H2O}$. But plenty of other acceptable equations can be obtained by adding an arbitrary number of times the following decomposition of $\ce{H2O2}$ : $\ce{2 H2O2 -> 2 H2O + O2}$.


For example, your first equation has been obtained in doubling my simplest equation and adding once the decomposition of $\ce{H2O2}$


Your second equation is obtained by adding my simplest equation plus once the decomposition of $\ce{H2O2}$


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