Q: question 5, am i on the right track?
A: We have to write the balanced chemical equation for a reaction between aluminum ammonium sulfate…
Q: Why should excess alkali be avoided in the FeCl3 test for acetic acid and benzoic acid?
A: When Acetic acid is treated with neutral Ferric Chloride Solution, then Red brown Precipitate of…
Q: Which of the following chemical tests cannot be used distinguish the two compounds below: O Tollen's…
A: A question based on introduction to organic chemistry that is to be accomplished.
Q: Why was the sample being made alkaline with 3M KOH and heated for the qualitative test for NH4+?
A: The reason why was the sample being made alkaline with 3M KOH and heated for the qualitative test…
Q: Using your titration curve estimate the pKa for NaH2PO4, compare this value to the literature value…
A: The question is based on the concept of titrations. we are titrating a weak phosphoric acid with…
Q: Write equations to demonstrate the stepwise reaction of Cd(H2O)42+ in an aqueous solution of KI to…
A: It is given that the reaction of Cd(H2O)42+ in an aqueous solution of KI to form CdI42-. The…
Q: An unknown sample containing mixed alkali (NAOH, NaHCO3, or NazCO3) was analyzed using the double…
A:
Q: 0.2 mL of 1% azide was added to 0.2 mL of 1% dye. What is the concentration of the dye now?
A: Given: Percentage concentration of solution 1 = 1 % Volume of solution 1 = 0.2 mL Percentage…
Q: An unknown sample containing mixed alkali (NaOH, NaHCO3, or Na,CO3) was analyzed using the double…
A: Answer - The correct option is - NaHCO3 and Na2CO3 Solution - pH - pH, historically denoting…
Q: A deepwell water sample of 100 mL was titrated with 0.010 M EDTA at pH 12 and consumed 31 mL.…
A:
Q: Give equations and explanations for:…
A: Cyclic voltametry is an electrochemical technique which measures the current that develops in an…
Q: Since EDTA titration must be done at pH 10, which procedure will help in removing the HCl in the…
A: Answer - EDTA - Ethylenediaminetetraacetic acid (EDTA) is an aminopolycarboxylic acid with the…
Q: What volumes of 0.100 M acetic acid and 0.100 M sodium acetate would be required to produce 1.00 L…
A:
Q: 4a) Explain how NaHCO, can act as both an acid and a base in aqueous chemical reactions. Use…
A: 4a) NaHCO3 can act as an acid and a base in aqueous chemical reactions. NaHCO3 is completely ionized…
Q: 1. In the tests for Cl and SO4, explain fully why the addition of acid will dissolve other insoluble…
A: Strong acids are able to dissolve salts of weak acids. Lets consider different salts of silver:…
Q: For a Kjeldahl analysis: you weighed 0.0312 g unknown dried blood sample and digested it with…
A: This experiment uses Kjeldahl's method to estimate the amount of nitrogen in the given organic…
Q: What is the role of Sodium metal in Lassaigne's extraction?
A: For preparing Lassaigne's extraction, Chemical compound is fused in presence of sodium metal in…
Q: How does the hydride generation method of sample introduction improve the sensitivity of some…
A: Hydride generation is an analytical technique that is very effective to separate hydride-forming…
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: Importance or use of hexaamminecobalt(III) chloride.
A: Hexaamminecobalt(III) chloride has the formula [Co(NH3)6]Cl3 It is prepared by recrystallization…
Q: Why Tetrafluoroboric acid diethyl ether complex (HBF4.Et2O) would be used over HCl for protonation…
A: Tetrafluoroboric acid is a superacid. It comprises of two parts: 1. H+ 2. BF4-
Q: The pH of a 0.02M solution of a weak acid was measure at 4.6 a. What is the [H+] in this solution?…
A: Given : pH = 4.6 Molar concentration of weak acid = 0.02 M
Q: What is the purpose of heating the acid solution with the antacid to boiling? Why is this a…
A: Since the tablet contains a carbonate, the neutralization reaction produces carbon dioxide. Because…
Q: In the test for ammonium (NH4+) ion, why should you take care that the litmus paper is not wet with…
A: ammonia gas can be detected by its pungent odour (it smells a lot like cat pee) and it will turn…
Q: By adding calcium bromide to the group reagent of the fifth analytical group, a ppt. is formed this…
A: Given statement is : By adding calcium bromide to the group reagent of the fifth analytical group, a…
Q: A deepwell water sample of 100 mL was titrated with 0.010 M EDTA at pH 12 and consumed 31 mL.…
A:
Q: Identify the Lewis acid, Lewis base, conjugate acid and conjugate base for the reaction of…
A: According to the Bronsted Lowry theory of acid and base,
Q: What would be the result if copper (I) chloride were added to the diazonium salt prepared in the…
A: Given: Copper (I) chloride is added to the diazonium salt.
Q: In order to analyse mercury with AAS, which method will you prefer?
A: Explaination as below
Q: what titrant will you use in preparing a substance with a pH of 7(green) whereupon the addition of…
A: Bromothymol blue is a pH indicator which is used to measure substances that have a neutral pH. It is…
Q: What is the principle used in colorimetric determination of iron in water?
A: The principal used in calorimetric determination of iron in water is joule's heat summations law.
Q: Why wouldn't you expect to see the purple color upon testing pure acid?
A: An acid is a chemical substance that furnishes hydrogen ion such as H+ ions on dissociation in the…
Q: What are the structures of threonine in each part of its titration curve? Give a clear handwritten…
A:
Q: Why should the solution be adjusted to pH 10 prior to EDTA titration?
A:
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: Why is it not necessary to know the exact volume of deionized water added when preparing the samples…
A: Since we know the volume and concentration of the acid or base taken for the titration hence the…
Q: Suppose you made a mistake in Ag group analysis , and instead of 6M HCl you added 6M HI . Does this…
A: if Silver ions reacts with Chloride ions the reaction is faster than AgI reaction and the solubility…
Q: Why was the sample being made alkaline with 3M KOH and heated for the qualitative test for NH4+?
A: The reason why was the sample being made alkaline with 3M KOH and heated for the qualitative test…
Q: What is the element indicated by the residue formed in the charring test? 2. How do the…
A: Q.1 What is the element indicated by the residue formed in the charring test? Ans: Charring is a…
Q: 1. Discuss the hazards of working with the solutions used in this experiment including HNO,,…
A: Since your question has multiple parts, we will solve first question for you. If you want remaining…
Q: Explain briefly What would happen to the total hardness if the solution was buffered to pH 13.00?
A: As per the rules, only the first question can be answered.
Q: What is the function of masking agent in EDTA titration?
A: Masking may be defined as the process in which a substance, without any physical separation of it…
Q: In the preparation of the titrant, the solution must be aged for at least 24 hours in the dark.…
A:
Q: Calculate the pH of the solution after the addition of each of the given amounts of 0.0651 M HNO3 to…
A:
Q: In the experiment of the acid dissociation constant of a weak acid using potentiometric titration,…
A: Solid NaOH can absorb water molecules from the atmosphere and hence, they are hygroscopic.…
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: Write the dissociation of [Co(NH3)4CO3]NO3 and [Co(NH3)5Cl]Cl2 compounds in an aqueous medium.
A:
Q: Which of these compounds would be the best buffer at pH 5.0: formic acid (pKa = 3.8), acetic acid…
A: Given: The pH of the buffer solution = 5.0 The pKa of formic acid = 3.8 The pKa of acetic acid =…
Why was the sample being made alkaline with 3M KOH and heated for the qualitative test for NH4+?
Step by step
Solved in 2 steps
- Why should the solution be adjusted to pH 10 prior to EDTA titration?Suppose you made a mistake in Ag group analysis , and instead of 6M HCl you added 6M HI . Does this mistake effect your procedure or not? Explain clearly.In the test for ammonium (NH4+) ion, why should you take care that the litmus paper is not wet with the solution in the evaporating dish?
- What is the purpose of heating the acid solution with the antacid to boiling? Why is this a critical step in the procedure?Why should excess alkali be avoided in the FeCl3 test for acetic acid and benzoic acid?The test solution should be acidified with nitric acid before silver nitrate is added to detect the presence of halides. Explain.
- Why is it not necessary to know the exact volume of deionized water added when preparing the samples for titration?What is pH of a 500mL solution with 0.165M diethyamine and 0.125 M diethammonium chloride? with chemichal equation pka 11 What would be the pH of a solution formed by adding 1.0mL of 0.500 M HCLO4 to solution?In order to analyse mercury with AAS, which method will you prefer?
- What is the purpose of adding CaCO3 or NaHCO3 in the Mohr Method determination of chloride?What volumes of 0.100 M acetic acid and 0.100 M sodium acetate would be required to produce 1.00 L of buffer at pH 4.000? (pKa = 4.752)A piece of magnesium metal was reacted with each of the following acids: 3 M HCl, 3 M acetic acid (Ka=1.8 • 10-5) and 3 M HF (Ka=6.8•10-4). Rank this acids in decreasing order of reactivity. Explain as well.