For the gas phase decomposition of nitrosyl chloride at 400 K 2 NOCI—2 NO + Cl2...

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For the gas phase decomposition of nitrosyl chloride at 400 K 2 NOCI—2 NO + Cl2 the following data have been obtained: 9.10x1

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Answer 1

Answer #1

Consider reaction, 2 NOCl 2 NO + Cl 2

Average rate of disapperance of NOCl = NOCl / t = ( C 2 - C 1 / t 2 - t 1 )

where C 2 is concentration of NOCl at time t 2 and C 1 is concentration of NOCl at time t 1.

Average rate of disapperance of NOCl over a time period from t= 10.7 h to t = 21.4 h is

= ( 1.77 $\times$ 10 -02 M ) - ( 2.96 $\times$ 10 -02 M ) / 21.4 hr - 10.7 h r

= - 0.0119 M / 10.7 hr

= -1.11 $\times$ 10 -03 M h -1

Negative sign indicates that concnetration of NOCl decreases with time.

ANSWER : Average rate of disapperance of NOCl over a time period from t= 10.7 h to t = 21.4 h is

1.11 $\times$ 10 -03 M h -1

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Answer 2

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