Equilibrium Tes...

For the reaction $$ 2X_ { (g)} + Y_ { (g)}  \rightleftharpoons  2Z_ { (g)} ; \triangle H = -80 K cal $$. The highest yield of Z at equilibrium occurs at 

For an acidic indicator has $$K_{a}$$ value of $$10^{-5}$$. The $$\%$$ basic form when $$pH$$ equal to $$5.3$$ is :

When a strong base $$NaOH$$ is added to the acidic buffer containing $$CH_3COOH+CH_3COONa$$ then which of the following reaction occurs?

Which of the following combination will act as a buffer?

$$HCOO^- + H_2O \rightleftharpoons HCOOH + OH^-$$ is related:-

Number of buffers can be made by reaction of $$ H_3PO_4 $$ and NaOH  is

Which of the following is a buffer solution?

In the reaction:
$$ N_2O_4(g) \rightleftharpoons 2NO_2(g) $$
On reducing the pressure, the reaction shifts in forward direction. This is because on reducing pressure:

pH of $$0.01M (NH_4)_2SO_4$$ and $$0.02M$$ $$NH_4OH$$ buffer $$(pK_{a\ (NH_4^+)}=9.26)$$ is

The total pressure at equilibrium for the dissociation, $$PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)$$ is 2 atm. One mole of helium is now introduced into the same vessel containing the reaction mixture. The equilibrium constant will: