Ammonium dichromate decomposes according to the following equation: (NH4)2Cr2O7(s) -> N2(g) + 4H2O(g) + Cr2O3(s) If...

Ammonium dichromate decomposes according to the following equation:

(NH4)2Cr2O7(s) -> N2(g) + 4H2O(g) + Cr2O3(s)

If 0.95 g of ammonium dichromate is used, and if the gases from this reaction are trapped in a 15.0 L flask at 23 deg. C.

How many moles of N2 and H2O are produced from (9.14x10^-1) g of (NH4)2Cr2O7 (MW = 252 g/mol)?

Expert Solution

According to above equation, 1 mol of ammonium dichromate would give 4 mols of . When heated these will be evaporated away.

The molar mass of ammonium dichromate

The number of mols of ammonium dichromate heated

= 63 g / 252 g per mol

= 0.25 mol.

queen_honey_blossom answered 2 years ago

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