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What is the ratio of coefficients of cau...

What is the ratio of coefficients of caustic soda and zinc metal in the reaction between zinc and NaOH? 

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The skeleton equation is
`NaOH+Znrarr Na_(2)ZnO_(2)+H_(2)`
The balanced equation is
`2NaOH+Znrarr Na_(2)ZnO_(2)+H_(2)`
The ratio of coefficients `NaOH` and `Zn = 2:1`
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