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if we use KMnO4 and H3Po4 and MnSO4 for tritation of fecl3 and calculation of. Fe2+ what suitable ratio for tritation
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- For the powder with composition 9wt.% Al, 3wt.% Ni and 88wt.% Mg Calculate the possible Gibb's Free energy (which reactions are most favorable) in a closed system of 610 °CIs it posible to remove 99% of 1.0 μM CuY2- impurity (by reduction to solid Cu) from a 10.0 mM CoY2- solution at pH 4.0 without reducing any cobalt? Here, Y (actually, Y4-) is EDTA and the total concentration of free EDTA is 10.0 mM. Hint: Concepts of Equilibrium of EDTA Complex Formation are involved in the solution of this problem. Standard reduction potentials to use in this problem are:CuY2- + 2e- ➙ Cu(s) + Y4- E°= -0.216 VCo2+ + 2e- ➙ Co(s) E°= -0.282 V.1. A Cr3+ solution is electrolyzed using a current of0.365 A. What mass of Cr(s) (51.9661) is plated outafter 10 hours?2. When an aqueous solution of CuSO4 is electrolyzedcopper metal is deposited. If a constant current waspassed for 5.00 h and 404 mg of Cu (63.546) metal wasdeposited, what was the current?
- Given that the Ksp for silver chloride is 1.76 x 10-10, and the Kf of silver(I) diammine cation [Ag(NH3)2 +] is 1.7 x 107, calculate the maximum number of grams of silver chloride that will dissolve in 250.0 mL of a 3.25 M solution of ammonia.How is the stability of a co-ordination compound in solution decided ?How is the dissociation constant of a complex defined?Silver chromate (Ag2CrO4) is a red solid that dissolves in water to the extent of 0.029 g L-1 at 25°C. Estimate its Ksp and compare your estimate with the value in Table 16.2.
- a) Which ion, Pt(II) or Mn(II), is more likely to form a sulfide in the presence of H2S in water. b) Rationalize your answer with the trends in hard and soft character. c) Give a balance chemical equation from your reaction.When I was a boy, I watched Uncle Wilbur measure the iron content of runoff from his banana ranch. He acidified a 25.0-mL sample with HNO3 and treated it with excess KSCN to form a red complex. (KSCN itself is colorless.) He then diluted the solution to 100.0 mL and put it in a variablepathlength cell. For comparison, he treated a 10.0-mL reference sample of 6.80 3 1024 M Fe31 with HNO3 and KSCN and diluted it to 50.0 mL. The reference was placed in a cell with a 1.00-cm pathlength. Runoff had the same absorbance as the reference when the pathlength of the runoff cell was 2.48 cm. What was the concentration of iron in Uncle Wilbur’s runoff ?PCl5 reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH3 solution. Write the reactions involved to explain what happens
- Explain why ionic attractions are weaker in media with high dielectric constants, e. g.,water and aqueous buffers.Where does the strongest IMF occur in liquid ethanol?(i) What type of non-stoichiometric point defect is responsible for the pink colour of LiCl?(ii) What type of stoichiometric defect is shown by NaCl?