How to qualitatively search for NO3- and NO2- in the presence of Br- anion? Explain with reaction equations.

Q: Sometimes it is not possible to indicate the end point of a titration. a) How can one proceed then…

A: The question is based on the concept of titrations. it is a volumetric technique to determine the…

Q: 5.)Shortly after the dissolution of lead(IV) oxide, the dissolved Pb will react with water to form…

A: EPA is the Environmental Protection act. For environmental and sustainable welfare under EPA limits…

Q: Explain why colour of KMnO4 disappears when oxalic acid is added to its solution in acidic medium.

A: The progress of different acid base reactions can be checked with the help of acid-base indicators.…

Q: What is the basis of the ‘40000’ in the equation? Note: this is about "DETERMINATION OF WATER…

A: Interpretation: To find out the basis of 40000 used in the equation given.

Q: Write all the reactions involved in the Mohr's method, if an unknown solution containing chloride…

A: Introduction Mohr's method is used to determine the chloride ion concentration with the help of…

Q: What is the role of cobalt glass for the flame test of potassium? Explain. Why was the flame test…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: D. Preparation of a Buffer from a Solution of a Weak Acid So far in this experiment the buffers that…

A: Pka=pH So B-=HB

Q: Why must solid remain in constant contact with a solution of sparingly soluble salt in order to…

A: The equilibrium is a phenomenon of reversible reaction. Any reaction's equilibrium constant (K) is…

Q: True or False: Blank titration is indicated for the determination of the concentration of a sample.…

A: A blank titration gives an idea of how much titrant is needed to the titration with sample. The…

Q: s it possible, upon precipitation of the third class ions, to add H2S first, then NH4OH and NH4Cl?…

A: QUALITATIVE ANALYSIS: The qualitative analysis of the metals or ions is used to detect the presence…

Q: Identify the type of coprecipitation that occurred in the following situation. (a) The…

A: answer - (a) The precipitation of bulky precipitates (e.g. MgNH4PO4) traps significant amount of the…

Q: 2. A solution that may contain Cu", Bi?", Sn, or Sb?* is treated with thioacetamide in an acidic…

A: 1) A solution that may contain Cu2+, Bi2+, Sn4+, or Sb2+ is treated with thioacetamide in an…

Q: How can the relative supersaturation be varied during precipitate formation?

A: RELATIVE SUPERSATURATION IS A TERM THAT INCLUDES FACTORS UPON WHICH PARTICLE SIZE OF PRECIPITATE…

Q: A sample of soluble salt weighs 1.2 g and contains chloride, bromide and iodide. With AgNO3, a…

A: To Calculate the approximate percentage of chlorine, bromine and iodine in the sample

Q: . What are some precautions that should be observed when collecting samples for DO determination, to…

A: 1. precautions are - a) It is extremely important to prevent contamination of the sample with…

Q: Find out in detail about the formation mechanisms and conditions of precipitates.

A: Answer - Precipitates - Precipitate: Is a  solid formed by a change in a solution, often due to a…

Q: What is the rationale of diluting the solution in the flask with washing distilled water at the…

A: Titration is done in neutralization reactions or redox reactions to determine the concentration of…

Q: What is NOT recommended for precipitation of crystal deposits: precipitation in presence of…

A: The correct option is option c.

Q: Would you expect calcite to be appreciably soluble in a solution whose pH is maintained at 4? A…

A: Given that Ph is maintained at =4  A solution at Ph= 11 Find the solutions in nature = ?

Q: Why is it possible to use K2S instead of thioacetamide in precipitating the Group II and Group III…

A: Thioacetamide is widely used in classical qualitative inorganic analysis as an in situ source for…

Q: Why homogenously formed precipitates are better suited for analysis than a precipitate formed by…

A: The gravimetric method is inherently more accurate than the volumetric method because the…

Q: A small von Weirman ratio is desirable, therefore it is advisable to form a precipitate by I.…

A: I only I) Stirring reagent  is right answer    (III) wrong BECAUSE The solution should be diluted to…

Q: In a separate experiment, the lab partners I. Goofed and T. Klutz treat their unknown with HCl and…

A: The cations present in the unknown mixture gave precipitate with HCl, i.e. precipitated as chloride.…

Q: An alkaline sample of sodium compounds weighing 1.196 g was dissolved in water, cooled at 15 deg C,…

A: Alkaline compounds of sodium may involve sodium hydroxide (NaOH), sodium bicarbonate (NaHCO3) and…

Q: Based from the given problem, What is the molecular weight of potassium biphthalate (C8H5KO4)? *…

A: Standardization:-  It is a method used to determine the exact concentration of a solution. Some…

Q: 1. How is complete precipitation assured in the Group III Cations? 2. In the confirmatory test of…

A:

Q: If a sample of silver coin weighing 0.2500 g gives a precipitate of AgCl weighing 0.2991 g, What wt…

A: The given data contains, weight of silver coin = 0.2500 g. weight of AgCl= 0.2991 g.

Q: Calculate the equilibrium concentration of N2O4 in 1.00 L of a solution prepared from 0.129 mol of…

A: The Equilibrium constant is defined as the ratio of the molar concentrations of the products and…

Q: A student performing this lab experiment receives his unknown solution that may contain ( Ba, Ca,…

A: In the given steps, initially barium chloride reacts with potassium chromate which results in the…

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: 1. What is the role of chromate ions in chloride determination? 2. Why pH range is important in…

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

Q: Why a filter paper cannot be utilized for the removal of potassium permaganate precipitate?

A: Filter paper can be defined as a semi-permeable paper that helps us to separate fine solid particles…

Q: Caustic potash that has been exposed to air is found on analysis to contain 90.00% KOH, 2.38% K2CO3…

A:

Q: What do the ions that gave a precipitate when mixed with AgNO3 have in common?

A: Since the halogen ions react with Ag+ ions to form a precipitate  Hence any anion whose salt with…

Q: Suppose that a small portion of the sulfate precipitated as lead sulfate rather than as barium…

A: Answer - According to the question - Given -  Small portion of the sulfate precipitated as lead…

Q: 1) Assuming that 0.433 g of precipitate is recovered calculate the percent by mass of SO42− in the…

A: Molar mass of sulphate, SO42- = 32.1 +4×16 = 96.1 g/mol Given Data: Mass of unknown sulfate salt =…

Q: Can a conventional pH meter with conventional buffer solutions measure the pH of the mobile phase…

A: Hydrophilic interaction liquid chromatography (HILIC) is a chromatographic technique used for the…

Q: The NaOH titrant in this experiment was prepared to be approximately 0.1 M and then was…

A: Given that, in an experiment,  approximately 0.1 M of NaOH solution was prepared and then was…

Q: The solubility of Sr(OH)2 is 3.2 x 104 g/L a) Write a balanced equation for the solubility…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The solubility of Ca(OH)2 is 1.3 x 10-5 g/L a) Write a balanced equation for the solubility…

A: a) Calcium hydroxide dissociates into calcium ion and hydroxide anion as follows: Ca(OH)2 ⇔ Ca2+ +…

Q: In gravimetric methods of analysis, the size and kind of precipitate formed plays an important role…

A:

Q: You are assigned an unknown solution that contains Group III cations. To -1 mL of this solution was…

A: In the above given cations Fe3+,Al3+ are group 3cations Zn2+ group 4 cation. The formation Of radish…

Q: A 0.500 g sample consisting of Na2CO3, NaHCO3, and inert materials was dissolved in sufficient water…

A: Volumetric titration is one of the methods that is used in the quantitative analysis. The method is…

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: Ethylenediamine tetraacetate or EDTA is a very common reagent in Analytical Chemistry. As what…

A: Two questions based on EDTA, which are to be accomplished.