consider the following system at equilibrium where delta H = 16.1 kj, and Kc = 6.50x10^-3,...

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Chemistry

consider the following system at equilibrium where delta H = 16.1kj, and Kc = 6.50x10^-3, at 298 K. 2NOBr forwsrd reverse arrows 2NO+ Br2

if the VOLUME of the equilibrium system is suddenly increasedat constant temperature:

The value of Kc:
increases
decreases
remains thesame

the value of Qc:
is greater than Kc
equal to Kc
is less than Kc

the reaction must:
run in the forward direction to restablish equilibrium
run in the reverse
remain the same. its alrrady at equilibrium

the number of moles of Br2 will:
increase
decrease
remains the same

Answer & Explanation Solved by verified expert

3.6 Ratings (576 Votes)

1 The value of Kc remains same as Kc depictsequilibrium constant which is only changed if the temperature isvaried But here the sudden volume is increased at constanttemperature and hence no chnge is Kc is observedKc NO2 Br2 NOBr22 Qc is less than KcLe Chateliers principle is used to understand the effect of thevariable on the equilibrium constant This principle states that ifany chemical reaction at equilibrium is forced to a change See Answer

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