Complete the balanced dissociation equation for the compound below in aqueous solution. If the compound does not dissociate, write NR after the reaction arrow. Co(C2H3O2)2 (s)-->
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Complete the balanced dissociation equation for the compound below in aqueous solution. If the compound does not dissociate, write NR after the reaction arrow.
Co(C2H3O2)2 (s)-->
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- Give the name of a reagent that will be used to precipitate AsO43- ions as MgNH4AsO4A pink solid has the formula CoCl3·5NH3·H2O. A solution of this solid is also pink in color and when titrated with silver nitrate quickly forms 3 mol of AgCl. Upon heating the pink solid, it loses 1 mole of water and forms a purple solid with the same NH3:Cl:Co ratio. Dissolving and titrating with AgNO3, the purple solid slowly releases one of its chlorides. a) Derive the formulas of the two octahedral complexes.b) draw and name them.c) write the chemical equations of all described reactions.What is the pH of a 0.05 M solution of CdSO4 if the KA value for [Cd(H2O)n] 2+ is 3x10-9 ? b. Write dissociation constant expression and predict pH (less or greater than 7) for Na2CO3 and CuCl2.
- Why As2O3 is first dissolved in base and then the resulting solution needs to be acidified before titration?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 happensWhat is the solubility of PbCO3(s) in 0.5M Na2CO3?
- Complete the balanced dissociation equation for the compound below in aqueous solution. AgI ->Preparation of cpper(1) chloride What color observed for the solution of Na2SO3 in water? What colour observed for solutions of CuCl2.2H2O in water? Which ion is responsible for the colour that is observed in the CuCl2 solution? What is observed when th Na2SO3 solution is added to the CuCl2? Which gas can be smelled when H2SO4 is added to the mixture? What is the colour of the CuCl when it is filtered on Buchner funnel? (before it is exposed to the atmosphere) What is the colour of the CuCl when it is filterd on the Bucher funnel? (before it is exposed to the atmosphere) Does the colour of the CuCl remain the same if you leave it to dry in the atmosphere? Calculate the percentage yields for the experimentFrom the value Kf=1.2×10^9 for Ni(NH3)6^2+, calculate the concentration of NH3 required to just dissolve 0.026 mol of NiC2O4 (Ksp = 4×10^−10) in 1.00 L of solution. (Hint: You can neglect the hydrolysis of C2O4^2− because the solution will be quite basic.)
- Complete the balanced dissociation equation for the compound below in aqueous solution. If the compound does not dissociate, write NR after the reaction arrow. RbBr (s) ->A 0.4755g sample containing (NH4)2C2O4 and inert materials was dissolved in H2O and made strongly alkaline with KOH, which is converted NH4+ to NH3. The liberated NH3 was distilled into 50.00mL of 0.05035 M H2SO4. The excess H2S04 was back-titrated with 11.13 Ml of 0.1214 NaOH. Calculate the %N in the sample. Hint: Determine the moles of titrant consumed via using the prepared titrant and subtracting the equivalent moles used in back-titration.What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.220 M CH₃NH₃I? (Kb of CH₃NH₂ is 4.4 × 10⁻⁴)