In reaction N 2 O 4 g → 2 N O 2 g , The observed molecular weight 80 g m o l - 1 at 350 K. The percentage dissociation of N 2 O 4 g at 350 K is

Question

In reaction N 2 O 4 g → 2 N O 2 g , The observed molecular weight 80 g m o l - 1 at 350 K. The percentage dissociation of N 2 O 4 g at 350 K is, 10%, 15%, 20%, 18%

MARKS App · Accepted Answer

Or N 2 O 4 → 2 N O 2 1 0 1 - α 2 α Mass remains same Average molar man = M N 2 O 4 1 + α So, = 28 + 64 1 + α = 92 1 + α 1 + α = 92 80 = 23 20 α = 23 20 - 1 = 3 20 % α = 3 20 × 100 = 15 %

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