(1) A solution containing 7mmol Fe+2 is titrated by a standard solution of ceric sulfate Ce(SO4)2,...
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(1) A solution containing 7mmol Fe+2 is titrated by a standard solution of ceric sulfate Ce(SO4)2, the final volume is 350 ml. What weight of ferrous ions remains un oxidized at the equilibrium point. (2) The e.m.f of the cell Pt H₂(1 atm), HA(0.15M) || KCI (2M), Hg₂Cl₂ Hg is +0.72 volt. Compute the concentration of H+ ion in the HA solution and from this the dissociation constant for HA? for the Ecalomal =-0.28v. (B) A solution mixture of propanoic acid (2.5M) and HCN (1.5M), calculate the CN/CH₂CH₂COO ratio. Given that Kа CH³CH2C00= 1.35 *105 and Ka HCN=6.2*10-10. (1) A solution containing 7mmol Fe+2 is titrated by a standard solution of ceric sulfate Ce(SO4)2, the final volume is 350 ml. What weight of ferrous ions remains un oxidized at the equilibrium point. (2) The e.m.f of the cell Pt H₂(1 atm), HA(0.15M) || KCI (2M), Hg₂Cl₂ Hg is +0.72 volt. Compute the concentration of H+ ion in the HA solution and from this the dissociation constant for HA? for the Ecalomal =-0.28v. (B) A solution mixture of propanoic acid (2.5M) and HCN (1.5M), calculate the CN/CH₂CH₂COO ratio. Given that Kа CH³CH2C00= 1.35 *105 and Ka HCN=6.2*10-10.
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