Question

More Equilibrium: Please write equilibrium expressions for the following reactions: 1. i. 2 SO2 (g) + O2 (g) 2 SO3 (g) il. NH4NOs (s) N2O (g) +2 H20 (g) i CaCO3 (s) + CaO (s) + CO2 (g) iv. HNO2 (aq) +H2O (I) HaO* (aq) + NO2 (aq) 2. Predict which way the equilibrium will shift for each of the following changes: CO (g) + H2 (g) C (s) H2O (g) + heat i. increase [H2O] ii. increase [C0] iii. increase temperature iv. decrease the concentration of H2 v. increase the pressure vi. increase the volume vii. add catalyst 3. Predict which way the equilibrium will shift for each of the following changes: SO2 (g) + NO2 (g) SO3 (g) + NO (g) + heat i. decrease temperature ii. add some SO2 ili. remove some NO iv. increase [SO3] v. decrease the pressure vi. increase the T

Answer 1

solution i) 250,0) + O2(g) 6 2503(9) [50]? [02] i) NH, NO2(3) <N2068) +2H20 (9) = [N20] [120]? - [[Why NO Nhy NO, is solid so it is left out of the equilibrium constant Rc = [N20] [120] Tw) Ca CO,s) > A0 % +(0, (8) Rc = [CO] Because CaCO₃ and CaO bath are solid iv) HNO2 (aq) + H₂O () () Hot (ag) + Noz (ar) - Re= [130] [NOo ] Scanned with c- [HINO Becausenho is liquid.

© C(s) + H2O(g) theat > CO(g) + Hz (O) i) Increase (120] adding additional reactant to system will shift the bring to the right side towards the side of product. ii) Increase [co adding additional product to the system, the equilibrium will shift to the left, in order to produce more reactant jii Increare temperature Above reaction is endothermic reaction so increan in temperature means adding more reactant to the system so equilibrium will shife right. iu) decrease the conc. of Hz It means conc. of product decrease so equilibrium will shift to the right u Increase in pressure Increase in pressure, the equilibrium of the above reaction would shift to the Bitte because right because reactant has gonaten a less no. of moles of gases than product sich. Scanned with CamScanner

Wi) Increase in volume The equilibrium will shift on the 1. left. add catalyst Adding catalyst has no effect on the final equilibrium position of the reaction. In the presence of catalyst beth forward and Ereverse reaction nates espeed up equally. 3) 50269) + NOGIJA 503 (9) + NO(g) + Hest il derrease temperature above reaction is exothermic reaction so decrean in temperature will shift the equilibrium to the eright: ii) add some SO2 Faciliterium will shift to the right because so, is reactant jii) sumove some NO remove No means product i removed so equililerin will shift to the right. iU) Increase SO3 Product is increase so equilibrium will shift to cs sceluft wide TITScaner

v) Decrease the pressure In above reaction no. of males of gas on both sides of the equation are equal the syetem will be uneffected by change in pressure. U Increase the temperature naction is exothermic so Increase in temperaturs will shift the equilibrium to the left sidi. Scanned with CamScanner