Write a balanced net ionic equation for the (equilibrium) formation of the tetrachloridocobaltate(ii) complex. b. based on your observations of color changes in part c, did heating the reaction mixture cause a shift in equilibrium? which direction? explain your answer based on the color changes you observed. c. is the formation of tetrachlorocobaltate(ii) complex ion exothermic or endothermic? explain your answer based on the shifts in equilibrium caused by heating and cooling the reaction mixture. d. what is the effect of an increase in temperature on the value for the equilibrium constant? (increase, decrease or no change)

we need the questions , i may then you.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole