1.

C_(2)H_(5)OH+KMnO_(4)rarrHC_(2)H_(3)O_(2)+MnO_(2)+KOH+H_(2)O is the unbalanced equation if 5g of ethanol & excess amount of aqueous KMnO_(4) are reacted and 5.5g of HC_(2)H_(3)O_(2) result. What is the percent yield in the nearest integer? [Given: Atomic mass of H = 1, C = 12, O = 16]

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Solution :From the PRINCIPAL of atomic conservation on CARBON
`3XX"moles of "C_(2)H_(5)OH=3xx"moles of "HC_(2)H_(3)O_(2)`
`"moles of "HC_(2)H_(3)O_(2)=(5)/(46)"(Theoretical)"`
`"moles of "HC_(2)H_(3)O_(2)" (experimental)"=(5.5)/(60)`
`"% YIELD "=(5.5)/(60xx5)xx46xx100=84%`


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