In a L vessel, mol of decomposes: . At equilibrium mol of is present. What is ?
Answer and explanation
Correct answer: A. mol/L
- Step 1: Equal amounts of and form, so M and M.
- Step 2: .
- Step 3: This equals mol/L.
Answer
mol/L.
Why not the others: forgets that also appears in the numerator; forgets to divide by ; uses only the product concentration.
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