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Consider the reaction and based on the r...

Consider the reaction and based on the reaction answer the questions that follow :
`(NH_(4))_(2)Cr_(2)O_(7) overset("Heat")to N_(2(g))+4H_(2)O(g)+Cr_(2)O_(3)`
Calculate:
The quantity in moles of nitrogen formed when 63g of `(NH_(4))_(2)Cr_(2)O_(7) ` is given

Text Solution

Verified by Experts

Let x be the volume of `N_(2)` evolved at STP.
`underset(252 g)underset("1 mol ")overset(63 g) ((NH_(4))_(2)Cr_(2)O_(7)) to Cr_(2)O_(3) + 4H_(2)O + underset(22.4 L) underset("1 mol ") overset(x)(N_(2)(g)) `
Ratio proportion : `(63 g (NH_(4))_(2)Cr_(2)O_(7))/(252 g (NH_(4))_(2)Cr_(2)O_(7)) = (x N_(2))/(22.4 L N_(2)) `
Or, `y = (11.2 L " Hydrogen ")/(44.8 L " Hydrogen") xx 22.4 L = 5.6 L `
Total volume of oxygen required ` = x + y = 44.8 L + 5.6 L = 50.4 L `
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