dthe that produce on Sta) What s ite equilibrium mixture iv, the initial concent

Question

dthe that produce on Sta) What s ite equilibrium mixture iv, the initial concentration of 5 mt of Fe-2.00 x 1o M soion, if the sotal volume ot rna- . The Absorbance of the colored solution of FeSCN in this experiment can 225 nmb) 300 nm )347 nm () ss0 9 in this equinbrium expression. True (T) or False (F).15pt a. If A is added to this system in equilibrium the system will form moreC b. The coefficient of the balanced equation is: A ando F c As the concentration of A and B increase the forward reaction slows down E d, K is a constant that depend of the initial concentration of the reacting species E e. Eventually the rate of the forward reaction equals the rate of the reverse reaction, and the system is at equilibrium 10. In above reaction at equilibrium, explain how affect the change of equilibrium Pressure if a b 4 and As an acid, a polyprotic acids have a very small acid dissociation constant (Ka), which measures the strength of the acid 11. Use the curve below that you obtained in your experiment. (Put the names) (Spts) 12. Explain dissociation constant in A step of dissociation of Phosphoric acid.(Equation) (Spts) 13. Explain dissociation Constant at logarithmic scale. (Spts) 14. How is possible determine the pH from pKa. (Spts) If the pH at one half the second equivalence point of a diprotic acid is 8.1, what are the values for pKaz ? (Spts) 15.

Explanation / Answer

9 a) when more A is added then it will convert more into product hence more C is formed. So True

b) The coffecient are small a,b,c, and d .So Flase

C) If we increase the concentration of A and B then more of product will form.So Flase

d) K is equilibrium constant a d depends upon both concentration of product and reactant at equilibrium

e) When rate of forward reaction becomes equal to backward reaction then equilibrium will be reached. So True

10) According to Le-Chatellier principle when pressure is increased then equilibrium will shift towards the side having less number of moles.Here product given 3 moles (c+d) So when pressure is increased then equilibrium will shift towards right direction.

and vice-versa when the pressure is decreased then shift towards more the side having more number of miles. Here reactant having 4 (a+b).

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