What is the purpose of adding concentrated ammonia in the elimination test for cations? Select one: a. because NH3 is a stronger base than NaOH b. to provide a strongly basic solution c. to determine if the hydroxide precipitates are amphoteric

Q: Why do you add NaHCO3 to the sample solutions in the determination of chloride by the Mohr Method…

A: Mohr method is a process in which we determine chloride by reacting it with silver nitrate solution…

Q: 31- A solution of compound Z gives a light blue precipitate with aqueous ammonia. The precipitate…

A: Flame test of certain ions gives specific colors to the flame. When the ion absorbs the energy from…

Q: A. Give the product of the equation that is mixed with zeolite Na-X Cuso,.5H;0 + H,0 + Na-X B. The…

A: A.The above reaction Is- Cuso4.5H2O +H2O+Na-X--->CuX2+ Na2SO4.H2O

Q: 7. EDTA is considered as a hexadentate molecule. 8. The metal ions which are determined by direct…

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Q: 8. What color reactions are expected at the end of the equivalence point?

A: ALL THREE IS A PRECIPITATION TITRATION SILVER ION IS COMMON IN ALL THREE

Q: EDTA is one of the common reagents used in a complexometric titration. a. Can we use EDTA…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: What hazards are associated with this lab and what steps are taken to avoid them? Why does adding…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: The formation constant for [Cu(CN)2]- is 1.0 x 1016, what is the value of the dissociation constant…

A: Formation Constant It is also know as stability constant of a complex in a solution. It describes…

Q: red-brown precipitate of a complex salt with potassium hexacyanoferrate (II), soluble in ammonia…

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Q: Consider the series of equilibrium reactions below. In which way would you expect the reaction to…

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Q: 3. What color would I expect a solution of chromate ions to be after I add an excess of acid?…

A: The ion which can change its color when the medium is changed from acidic to basic or vice versa,…

Q: 1) Explain why you can dissolve Ni(OH)2 in aqueous ammonia. 2) Explain how the reaction of Ni(OH)2…

A: Answer: These questions are based on the principle of qualitative analysis where in certain…

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Q: Based on the Kf values listed in table 17.1, calculate the concentration of NH3 required to dissolve…

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Q: 1. In the tests for Cl and SO4, explain fully why the addition of acid will dissolve other insoluble…

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Q: There are two different types of reactions that NaI might undergo with concentratedsulfuric acid in…

A: The reaction of NaI with H2SO4 is:

Q: A student uses 0.001 M potassium thiocyanate solution to make the calibration solutions in the first…

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Q: What is the use of sodium bismuthate in the test for manganous ion?

A: This question is based on Analytical chemistry Ion to be identified : Manganous ion. Chemicals used…

Q: A chloride unknown weighing 0.3221 g is dissolved in an acidic solution and is treated with silver…

A: we have to calculate the percentage of Cl- in the sample

Q: Buffer preparation: A 6.90 g sample of sodium nitrite (NaNO2, 68.995) was dissolved in about 100. mL…

A: Given,  When 6.90g of NaNO3 was dissolved in 100.0 mL of water then added to 500mL of 0.200 M HNO2…

Q: DATA A. Typical Reactions of the Ions Ammonia and Hydroxide Ion Complexes. In the spaces provided,…

A: The explanation is given below-

Q: The substance to be analyzed – is white, highly soluble in water salt. Reaction with NaOH gives…

A: Based on the above information of series of reactions involved, I am writing down the reactions…

Q: A solution is prepared initially containing 1 mM Au(NO3)3 and 100 mM KCI. Calculate the…

A: Concentration of Au(NO3)3     = 1 mM Concentration of KCl solution = 100 mM logβ1= 6.98 logβ2= 13.42…

Q: Upon the test of Cadmium ion, a black precipitate was obtained rather than a yellow precipitate.…

A: In the problem we need to speculate the black precipitate that was obtained instead of yellow upon…

Q: Account for the separation of aluminum ion from manganese ion, ferric ion, and cobalt ion. Write the…

A: Since you have posted a multiple questions , we will solve first question for you. To get remaining…

Q: Buffer preparation: A 6.90 g sample of sodium nitrite (NANO2, 68.995) was dissolved in about 100. mL…

A: Given,  When 6.90 g sample of NaNO2 was dissolved in 100.0 mL of water and it is added to 500. mL of…

Q: A standard solution contains 100 ppm of Fe, which was found to have an absorbance of 0.151 au at 508…

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Q: A solution is prepared initially containing 1 mM Au(NO3)3 and 100 mM KCl. Calculate the…

A: The question deals with the formation constant of a complexation reaction. When a reaction between a…

Q: An EDTA solution was prepared by dissolving approximately 4 g of the disodium salt in approximately…

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Q: What is the purpose of adding concentrated ammonia in the elimination test for cations? a. to…

A: Here we have to choose correct option about above qualitative analysis-

Q: Question attached

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Q: Write the fitted equations for the reactions of H+ with the complexes of Zn2+

A: Complex ions are ions with a central metal ion bonded to one or more molecules or ions. They are a…

Q: Ignore inorganic byproducts and the alkoxide side product.

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Q: 20.- Explain the steps in the substitution of the square planar complex of [Pt(CI)4]2 reacting (1 to…

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Q: 6. The solubilities of the sulfate and chromate of Barium in this reagent is used to distinguish the…

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Q: Can precipitation give a confirmatory result on Group V cations?

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I…

Q: A 100.0 mL solution containing 0.973 g of maleic acid (MW = 116.072 g/mol) is titrated with 0.364 M…

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Q: Fe3+ + OH- FEOH²+ + OH- Fe(OH)2* + OH- Fe(OH)3(ferihydrite) + OH- Fe(OH)4

A: pH is the negative logarithm of the hydrogen ion concentration. It is a measure of acidity or…

Q: Discuss the principles behind the titrations used to determine copper and NH3 in the Synthesis of…

A: For synthesis of copper-ammonia complex , First we take copper sulfate solution in a testtube and…

Q: In the preparation of the titrant, the solution must be aged for at least 24 hours in the dark.…

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Q: 1. Which of the following statement/s is/are TRUE regarding the formation of Cd(OH).- complex ion? *…

A: Lewis acids : They accept electrons. Lewis base : They donate electrons.  Thus Cd2+ is a lewis acid…

Q: 7. Which sentence is false about ligand? a) It is act like lewis base b) CN is example of…

A: Ligands are the species which donates lone pair or electron pair to the central metal atom or ion in…

Q: 10. According to the background information the Group III reagent is to be buffered at pH 10 to…

A: Answer- Data given- Fe3+ concentration is 0.1 N, ksp for Fe(OH)3 is 4.0x 10-38.

Q: Phosphoric acid (H₃PO₄) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is a useful…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A mixture of Al3+ and Mg2+ in a sample of water. Explain a procedure to analyse this mixture using…

A: Aluminium ion, Al3+, form stable complex with EDTA than Mg2+does.

Q: 38. Determine the pH of 0.42 M for formic acid, HCOOH solution. The value of pka for HCOOH is 3.75.…

A: We have to calculate the pH of Solution.

Q: Write the dissociation of [Co(NH3)4CO3]NO3 and [Co(NH3)5Cl]Cl2  compounds in an aqueous medium.

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Q: You are planning to determine the concentration of acid in vinegar by titration with a suitable…

A: Vinegar contains acetic acid, which is a weak acid.

Q: The formation constant for [Cu(CN)2]- is 1.0 x 1016, what is the value of the dissociation constant…

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Q: The formation constant for Ni(en)32+ is 4.0 x 1017, what is the value of the dissociation constant…

A: Any reaction which is spontaneous in nature forms stable product and due to which the value of their…