Answer all questions from 6 to 12 with a brief explanation for the answer

...30.4KB/s ll Vo LTE 53 4:45 PM CamScanner 07-27... ZAC(s) JU2(8) 4) NH HS) NH,(g) + H,S Scanned with CamScanner Which of the following is a characteristic of a reversible reaction at equilibrium? I) Number of moles ofreactants and products are equal 2) It can be influenced by a catalyst 3) It can never proceed to completion 4) It can be attained in open vessel 7. A chemical reaction is said to have attained equilibrium when DEqual amounts of reactants and products are formed 2) Reactants are completely converted to prodhucts 3) The rate of forward reaction is equal to the rate of backward reaction 4) The concentration of the reactants and products is the same 6. 8. Attainment of equilibrium in a gaseous reversible reaction is detected by the constancy of 1) Colour 2) Density 4) All the above 3) Pressure 9. The reaction CACO,(s) =CaO(s) + CO,(g) goes to completion in lime kiln because of the 1) High temperature 2) CaO is more stable than the CaCO, 3) CaO is not dissociated 4) CO, escapes continuously 10. Chemical equilibrium is dynamic because 1) The equilibrium attained quickly 2) The concentration of the reactants and products become same at equilibrium 3) The concentration of reactants and products are constant but different 4) Both forward and backward reactions occur at all time with the same speed 11. Which of the following reactions can be followed by its colour change 1) SO (g) + 1/2 O,(g) SO,(g) 2) N,(g) + 3H,(g)= 2NH,(g) 3) 2HI(g) 21,(g) + 1 ,(g) 4) C(graphite) + CO (g) 2C0(g) 12. A gas bulb is filled with NO, gas and immersed in an ice bath at 0C which becomes colourless after sometime. This colourless gas will be 1) NO, 3) N,0, 2) N,0 4) N,0, Scanned with CamScanner