Explain the reaction involved in the determination of dissolved oxygen in water using Winkler methods.

Q: Calculate the K.E. of molecule of helium in 1 cm3 of volume at a pressure of 2 atmosphere.

A: Volume = 1cm3. We know 1000cm3 = 1L So 1cm3 = 1x 10-3 L Pressure = 2atm  R = 0.0820 L atm mol-1s-1…

Q: Identify .It is the technique of separation and identification of chemical substances by a moving…

A:

Q: What are the advantages of dual alkali system?

A: The dual alkali scrubbing system is one of the systems which is used for the removal of sulfur oxide…

Q: Write the balanced molecular chemical equation for the reaction of solid sodium with aqueous zinc…

A:

Q: How is lead ion separated and identified in group 1 cation analysis?

A: Qualitative analysis of Lead ion (Pb2+) ; In group I cation analysis, the presence of Pb2+ is…

Q: Propose purification methods for cobalt(II) sulphate (CoSO4.7H2O)

A: Purification The chemicals used for various purposes should be completely free from any type of…

Q: write the method for preparation of caustic soda.

A: Caustic soda is known as Sodium hydroxide (NaOH) or Lye.  It is an alkali salt.It can be prepared by…

Q: of 15.00 x 10 mA flows for exactly two hours, calculate the number of tin atoms in the metal…

A: Using Faraday's law of electrolysis  Mass = Mit/nF Where, M = molar mass           i = current =…

Q: give at least one method of preparation of caustic lunar.

A: Silver nitrate is also known as Caustic lunar.  It is an effective oxidizing agent for organic…

Q: Discuss the advantage and disadvantage of Wijs method of iodine value determination. What…

A: The advantages and disadvantage of the wijs method is given below.

Q: Describe the preparation of 2.50 L of 0.500 M HNO3, starting with a 9.00 M solution of the reagent.

A: Concentration in terms of molarity is defined as the moles of solute present per litre of the…

Q: What are the uses of KMnO4?

A: Potassium permanganate is also known as potassium manganate (VII). It is an inorganic compound. Its…

Q: Describe the preparation of I L of 5moll-2 HCL colution from concentrated acid/d=1019 g/m²: 37.500)

A: **As you have asked multiple questions, I am solving first question. Either resubmit other questions…

Q: What is the major solid product resulting from the removal of SO2 from furnace gas?

A: The SO2 and SO3 gases from the furnace are not directly released into the atmosphere because S and…

Q: 7 determination of sodium, potassium and calcium in water samples by ICP-OES. 1. kindly assist me…

A: AIM - DETERMINATION OF SODIUM, POTASSIUM AND CALCIUM IN WATER SAMPLE BY ICP-OES . 1)What is ICP-OES?…

Q: (iv) Reduction of VO2+ to produce VO²+ (v) Neutralization of sulfuric acid by barium hydroxide (vi)…

A: (iv) since the reduction reaction means gain of electrons Hence V in VO2+ will gain 1 electron and…

Q: What are the advantages and disadvantages of the Winkler method for measuring D.O.?

A: Winkler method  is an easy to use method which involves titration in procedure.

Q: A compound ‘X’ is used for drinking, has pH =7.Its acidified solution undergoes decomposition in…

A: Chemical Reactions are the way of representation of a compound getting converted from reactants into…

Q: Why is anhydrous ammonia not used as reducing gas in polpulated areas?

A: Anhydrous ammonia: It is the compressed liquid form of ammonia that is free from water. In other…

Q: a) Describe the major disadvantage that must be overcome in the use of supercritical carbon dioxide…

A: Organic solvents have many drawbacks such as handling and disposal problems. Moreover, they are not…

Q: Describe liquid-liquid extraction. Provide at least one application for liquid-liquid extraction in…

A: Liquid–liquid extraction also known as solvent extraction and partitioning.

Q: Describe how you will prepare 1L of 150.0ppm of Cu2+ using Cu metal

A: The 1.0 ppm is equal to 1 mg of Cu2+ ion in 1.0 L of the solution thus,

Q: Describe the preparation of 2.000L of 0.0500o mol/L silver nitrate AgNO, (169.87 g/mol) from the…

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Q: Write the balanced net equation for the precipitation of calcium sulfide from aqueous solution:

A: A chemical reaction (aqueous) in which reactants react with each other and form a product, that…

Q: 4.The process of removing SO2 by injecting powedered limestone which is converted to calcium oxide?

A:

Q: Write and balance the equation for the reduction of iodate by hydrogen sulfite ions to give iodide…

A: Balance the equation for the reduction of iodate by hydrogen sulfite ions to give iodide and sulfate…

Q: What is the concentration in mol·dm⁻³ of the oxalic in the conical flask?

A: Given :- mass of oxalic acid = 7.500 g                Volume of solution = 250.0 cm3  To calculate…

Q: Why does the reddish meat become pale when being soak in hydrogen peroxide?

A: The color of the meat is  an indicator to decide whether the meat is fresh or not. It is a heme…

Q: Why, do you think, the sulfur extracted during the Frasch process is 99.5% - 99.9% pure? Why can’t…

A: Frasch process is based on the principle that sulfur has a low melting point. Sulfur is pushed out…

Q: Identify the sources of chlorine in water and discuss the precautions need to be taken to minimize…

A: Answer- There are three methods that you can use to test for free, combined, and total chlorine in…

Q: 100.09 mg of CaCO3 loses 43.97% of its weight when heated from 298 to 1100 K. Confirm that this…

A: Given : Mass of CaCO3 heated = 100.09 mg = 0.10009 g                                        (Since 1…

Q: A student prepared a solution in 1.00 dm volumetric flask by mixing 500. cm3 of Potassium Chromate…

A: Percent yield is defined as measure of the quantity  of moles of product formed in reaction with…

Q: Why is a mixed indicator used in nitrogen analysis?

A: A mixed indicator gives sharper end-point color changes.

Q: Describe the composition of Glass electrode used for the pH measurements?

A:

Q: (b) What is the principle of 'Carbonate conditioning'? Why it fails in High Pressure Boilers? Give…

A: Please find your solution below : Carbonate conditioning is one of the important internal…

Q: what are the significant applications of extraction in the industry.

A: Answer - Extraction -When the solute (liquid or solid) is add to a heterogeneous system of two…

Q: A.No.2: Briefly discuss with flow diagram ,the manufacturing process of any one of the acidic…

A: The substance that can exhibit intense resistance to the variation of the temperature, the pressure…

Q: B-2: Decomposition of Sodium Bicarbonate a) Observation on filtering the Ca(OH), solution: b)…

A: a. On heating sodium bicarbonateNaHCO3 reacts with calcium hydroxideCaOH2 to form calcium carbonate…

Q: Calculate the fraction of intact H2PO3 molecules in an aqueous solution of phosphorous acid at (a)…

A: given:  pH for part (a) = 5 pH for part (b) = 9 The reaction during the dissocition of acid is:…

Q: =) Nitric acid is manufactured by the catalytic oxidation of ammonia. (i) Write a balanced cquation…

A: BALANCED CHEMICAL EQUATION FOR CONVERSION OF AMMONIA TO NITROGEN MONOXIDE The reaction is…

Q: The determination of the impurity of sulfates in potassium chloride, potassium iodide is carried out…

A: Generally, impurities are removed from the making of the precipitate.

Q: Write the balanced equation for the neutralization reaction between H2SO4 and KOH in aqueous…

A: A neutralization reaction refers to a chemical reaction in which an acid reacts with a base and…

Q: What is the role of a depressant in Froth Floatation process for the concentration of a sulphide…

A: