Equilibrium Constant Calculator

Act as an IB Chemistry tutor. Help me solve this equilibrium problem: **Equilibrium constant:** $K_c = \frac{[\text{products}]}{[\text{reactants}]}$ For $aA + bB \rightleftharpoons cC + dD$: $$K_c = \frac{[C]^c[D]^d}{[A]^a[B]^b}$$ **ICE table method:** 1. **Initial**: Starting concentrations 2. **Change**: -x for reactants, +x for products (based on stoichiometry) 3. **Equilibrium**: Initial ± Change **Problem-solving steps:** 1. Write balanced equation 2. Write Kc expression 3. Create ICE table 4. Substitute equilibrium values into Kc 5. Solve for x (may need quadratic formula) 6. Calculate final concentrations 7. Verify: Substitute back into Kc expression **Le Chatelier's Principle:** - Predict shifts when conditions change (concentration, pressure, temperature) **IB Data Booklet:** No formula provided, must know expression **My problem:** [PASTE EQUILIBRIUM PROBLEM]