18. Consider the equilibrium When 2.000 MNOCI is placed in an empty tank at 500,0 K...

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Answer 1

Answer #1

18. Equation of reaction : Cl₂ + 2 NO $\rightarrow$ 2 NOCl

Initial conc. of NOCl = 2.00 M

Equilibrium conc. of Cl₂ = 0.979 M

From the equation, [NO] = 2 * [Cl₂] = 2 * 0.979 = 1.958 M

Concentration of NOCl reacted = moles of NO formed = 1.958 M

Equilibrium [NOCl] = inititial - reacted = 2.0 - 1.958 = 0.042

Writing the equation for K: K = [NOCl]² / ([Cl₂] * [NO]²] = 0.042² / (0.979 * 1.958²⁾ = 4.70 * 10^-4 M^-1

Answer 2

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