Change of litmus paper from blue to red

Q: Which of the following would cause a loss of yield and would also change the observed/measured ratio…

A: Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them…

Q: Which is the correct step that must be followed if you have a secondary analytical grade of AgNO3?…

A: Given  secondary analytical grade of AgNO3  Choices of Step Given Heat 100 mL of solution of AgNO3…

Q: a. The solubility of barium iodate monohydrate in 25°C water is 0.028 g per 100. mL of water.…

A: Since you have asked a question with multiple subparts, we will answer only first three subparts for…

Q: The substance to be analyzed – is white, highly soluble in water salt. Flame coloration test gives…

A: SrCl2 white color compound   SrCl2 soluble in water due to it's ionic nature.     On treatment with…

Q: Anna is performing a precipitation Gravimetry on her experiment. She weighed an exact amount of the…

A: Re-dissolving her sample with another solvent.

Q: What is the purpose of melting point analysis?     to determine the identity of an unknown…

A: Melting point of any substance is defined as the temperature at which the solid phase of the…

Q: How many unpaired electrons do each of the following chemicals have? What are the total charges for…

A: The structure of benzoic acid is given as: There are no unpaired electrons in benzoic acid and the…

Q: If the size of the precipitate is smaller than pores of the filter paper, the paper cannot retain…

A: A precipitate is an insoluble solid which forms from a liquid solution. When cation and anion…

Q: Arrange the following steps in the standardization of 0.1N AgNO3 * Carefully bring the mixture to a…

A: To arrange the following steps in the standardization of 0.1N AgNO3.

Q: At the beginning of a fractional distillation, the temperature of the vapor at the top of the…

A: I Assume it is option - 1st that is The approximate boiling point of the liquid in the vapor phase

Q: All of these should be considered in choosing solvent for extraction except should be sparingly…

A: The selection of solvent of choice is an important step in extraction. It mostly depends on the…

Q: Write the chemical reactions involved in forming these precipitates. a.) 1 mL 0.1 M MgCl2 +3 mL…

A: When two ionic compounds react with one another and their constituents ions displaced with one…

Q: You have 100 mL of an organic acid solution in water which contains 0.30 g acid. The distribution…

A: The organic acid is an organic compound having organic properties and the most common organic acids…

Q: A student was careful to make and stir all of her standard solutions immediately before measuring…

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Q: Calculate the saponification value of a sample of castor oil from the following data: Weight of oil…

A: Saponification value or saponification number (SV or SN) represents the number of milligrams of…

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: Use the data below to determine what cations are present in your unknown sample.  You should use…

A: Step 1: Since upon adding HCl, no precipitate is formed. Hence group 1 cations, that is Ag+,…

Q: Calculate the volume of saturated Ammonium sulphate to be added to a 201ml of protein solution to…

A: Interpretation -  Calculate the volume of saturated ammonia sulfate to be added to a 201mL of…

Q: In the experiment, 75 mL of 3M sulfuric acid is used to extract the 3-nitroaniline. In order to…

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Q: The reaction of sulfuric acid with sodium hydroxide is described by the equation: [% H_2SO_4+2NaOH\…

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Q: List the steps required in gravimetry to prevent impurities in the final precipitate.

A: Avoiding impurities is an important aspect in gravimetric precipitation.

Q: help asap Ostwald ripening (digestion) improves the purity and crystallinity of the precipitate.…

A:

Q: write an equation for this lab and explain the observations that would occur: measure out 10 mL…

A: We have to give the chemical equation for the given reaction as well as explanation.

Q: Which among these is/are properties for the type of precipitate required in gravimetric analysis?…

A: The precipitate in gravimetric analysis should be  Known composition and  Large particles (…

Q: You were given a mixture of two miscible solvent A and B that you are tasked to separate. You know…

A: The mixture consist of two miscible solvent A and B which has different boiling points. Hence, the…

Q: Table 1. Results of the solubility tests for C4H6O2. SOLUBILITY TEST distilled water Litmus paper…

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Q: A mixture of pure BaCO3 and pure Na2CO3 weighs 1.000 g and has the total neutralizing power of 15.37…

A: the solution is shown below

Q: Q3/A 0.80868 gm sample of a commercial phosphate detergent was ignited at a red heat to destroy the…

A: This question is from Analytical Chemistry. In this question we will find out the percentage of P,…

Q: You have a 5:95 mixture of the two following compounds. Given only the information below, determine…

A: To solve this question we should know the different separation techniques.Firstly see all the…

Q: An impure sample containing 2.00 g of sodium carbonate and bicarbonate was taken. It was dissolved…

A: The question is based on the concept of mix indicator titration. At phenolphthalein end point, Only…

Q: . A 1.2-gram sample of lanolin was treated with Wij’s solution and excess potassium iodide solution.…

A: GIVEN-  Mass of lanolin sample(W)=1.2g Normality of sodium thiosulfate solution=0.1N Volume of…

Q: If the same mass of Na2SO4 (MW: 142 g/mol) and K2SO4 (MW: 174 g/mol) were weighed and used for the…

A: Precipitation gravimetry is a technique which is used for the determination of the mass of an…

Q: laire needs to determine the identity of a hydroxide precipitate in an unknown analysis. An HCl…

A: #Q.1: The balanced equation for the reaction of the titrant, HCl with Na2CO3(aq) is: Na2CO3(aq) +…

Q: Based on the observations given in the table below, determine the identity of substance A, B, C from…

A: Sample A  -   C6H5-NH2     ( 10  amine ) Sample B   -   CH3CH2-NH-CH2CH3    (  20 amine ) Sample C…

Q: Solubility Behavior Indicate + if the sample was soluble and – if not. Test Sample Water NaOH H,SO,…

A: Alcohols are the organic compounds which have an alkyl chain and a hydroxyl group is attached to the…

Q: 0.2 mL of 10% sodium azide was added to 1.8 mL of 0.2% of YGM. What is the concentration of azide…

A: Given,  Volume of sodium azide V1 = 0.2 mL Concentration of sodium azide C1 = 10% = 0.01 Volume of…

Q: Describe the fractional distillation curve/graph

A: To describe the fractional distillation curve / graph.

Q: 1 gm of calcium carbonate is dissolved in dilute HCl and diluted to 1 liter with distilled water.…

A: Solution is given below  in jpeg format  Carbonate and non-carbonate hardness of water sample = 200…

Q: Based from the given problem, What is the molecular weight and meq of potassium biphthalate…

A: Given, mass of NaOH pellets = 14.7 g Weight of KHP = 5.000 g

Q: Which among the statements to promote large precipitates is INCORRECT?

A: Option 4 is incorrect Lower the relative supersaturation (RSS) valve,larger the precipitate…

Q: Calculate the iodine value of talisay seed oil using 0.25 g of the oil as a sample. The oil consumed…

A: Given data: Weight of the oil W = 0.25 g. The volume of the sodium thiosulfate consumed by oil…

Q: A sample of naphthalene is contamined with a small amount of anthracene. The melting point would be…

A: Melting point the temperature where the solid starts to melt. Melting point is measure in oC or oF.…