Determine the solubilities of silver chromate barium chromate, ferric hydroxide, lead chloride and mercurous iodide at `298K` from their solubility product constants given in Table `7.9`. Determine also the molarities of individual ions.

The electrochemical cell shown below is a concentration cell. M|M^(2+) (saturated solution of a sparingly soluble salt, MX_2 || M^(2+) (0.001 mol dm^(-3) ) |M The emf of the cell depends on the difference in concentration of M^(2+) ions at the two electrode The emf of the cell at 298 is 0.059 V The solubility product (K_(sp) , mol^(3) dm^(-9)) of MX_2 at 298 based on the information available the given concentraiton cell is (take 2.303 xx R xx 298 // F = 0.059 V )

For a general reaction given below, the value of solubility product can be given us {:(A_(x)B_(y),=xA^(+y),+yB^(-x)),(a,0,0),(a-s,xs,ys):} K_(sp)=(xs)^(x).(ys)^(y) (or) K_(sp)=x^(x)y^(y) (S)^(x+y) Solubility product gives us not only an idea about the solubility of an electrolyte in a solvent but also helps in explaining concept of precipitation and calculation [H^(+)] ion, [OH^(-) ] ion. It is also useful in qualitative analysis for the idetification and separation of basic radicals Potussium chromate is slowly aded toa solution containing 0.20M Ag NO_(3) , and 0.20M Ba(NO_(3))_(2) . Describe what happensif the K_(sp) for Ag_(2),CrO_(4) , is 1.1 xx 10^(-12) and the K_(sp) of BaCiO_(4) , is 1.2 xx 10^(-10) ,

For a general reaction given below, the value of solubility product can be given us {:(A_(x)B_(y),=xA^(+y),+yB^(-x)),(a,0,0),(a-s,xs,ys):} K_(sp)=(xs)^(x).(ys)^(y) (or) K_(sp)=x^(x)y^(y) (S)^(x+y) Solubility product gives us not only an idea about the solubility of an electrolyte in a solvent but also helps in explaining concept of precipitation and calculation [H^(+)] ion, [OH^(-) ] ion. It is also useful in qualitative analysis for the idetification and separation of basic radicals What is the molar solubility of Cu(OH)_(2) , in 1.0 M NH_(3) if the deep blue complex ion [Cu(NH_(3))_(4)]^(2+) is formed. The K_(sp), of Cu(OH)_(2) , is 1.6xx 10^(-19) and K_(3) , of [Cu(NH_(3))_(4) is 1.1 xx 10^(13)

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. What is compound (B) ?

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. Compound 'C' is

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. Compound 'A' is

K_2Cr_2O_7 acts as a good oxidizing agent in acidic medium underset("Orange")(Cr_(2)O_(7)^(2-)) + 14H^(+) + 6e^(-) rarr underset("Green")(2Cr^(3+)) + 7H_2O In alkaline solution, orange colour of Cr_(2)O_(7)^(2-) chages to yellow colour due to formation of Cr_2O_(4)^(2-) and again yellow colour changes to orange colour on changing the solution to acidic medium underset("Orange")(Cr_2O_7^(2-))+2OH^(_) rarrunderset("Yellow")(Cr_2O_7^(2-))+H_2O underset("Yellow")(2CrO_(4)^(2_-)) + 2H^(+) rarr underset("Orange")(Cr_(2)O_(7)^(2-) + H_(2)O) Cr_(4)^(2-) and Cr_(2)O_(7)^(2-) exist in equilibrium at pH =4 and are interconvertible by altering the pH of the solution. When heated with H_2SO_4 and metal chloride K_2Cr_2O_7 gives vapour of chromyl chloride (CrO_2Cl_2) . Chromyl chloride (CrO_2Cl_2) when passed into aqueous NaOH solution, yellow colour solution of CrO_(4)^(2-) is obtained. This on reaction with lead acetate gives yellow ppt. PbCrO_4 . When H_2O_2 is added to an acidified solution of dichromate ion, a complicated reaction occurs. The products obtained depend on the pH and concentration of dichromate. Cr_2O_7^(2-)+2H^(+) + 4H_(2)O_(2) rarr 2Cr(O_2)+5H_2O A deep blue-violet coloured peroxo compound, CrO(O_2)_2, ' called chromic peroxide is formed. This decomposes rapidly in aqueous solution into Cr^(3+) and xygen. What happens when a solution of potassium chromate is treated with an excess of dilute nitric acid?