Assuming that the uncertainty in the readings does not change, why is it not acceptable to base experimental results and conclusions on titration volumes that are smaller than 10.00mL ?
Q: A 25.00 mL volume of 1.637 M sulfuric acid is titrated with potassium hydroxide. At the equivalence…
A: Molarity = Moles of solute/Volume of Solution(in L) Moles of Solute = Molarity x Volume of…
Q: The chloride in a sample is to be determined gravimetrically by precipitation and weighing AgCl.…
A: The answer is 2.47g. Here in this question 1. First you have to find out moles of AgCl so that you…
Q: A hydrochloric acid solution is standardized by titrating 0.4541 g of primary standard…
A: Given:The mass of primary standard tris(hydroxymethyl)aminomethane = 0.4541 g. Volume = 35.37 mL =…
Q: A titration requires an indicator molecule or substance. O True O False
A: Given statement is : "A titration requires an indicator molecule or substance". Is the given…
Q: What is a qualitative test and what is a quantitative test?
A: A quantitative analysis where the amount of substance is calculated present in the sample by…
Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…
A:
Q: explain why a titration flask does NOT need to be dry when titrating saturated solutions
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Q: In the titration calculation, moles of KOH were calculated from the known molarity and measured…
A: Given : moles of succinic acid has been calculated in the procedure To find : mass of Succinic acid…
Q: A student titrates samples of a base with a standardised acid. The titration values obtained for…
A: Given that, Student titrates samples of a base with a standardised acid The titration values…
Q: Drag and drop the terms to label this diagram of a titration apparatus accurately. burette stopcock…
A: Here, we have to label the given diagram of a titration apparatus.
Q: An impure sample of potassium hydrogen phthalate (KHP) was titrated to determine the percent…
A: We will use stoichiometry of the reaction to get the answer.
Q: In the absence of sodium hydroxide, which of the following substances can I use as the titrant to…
A:
Q: In the experiment, the amount of acetic acid in vinegar was determined by titrating with 0.1 M NaOH…
A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…
Q: Why is it all right to use a wet flask or to use water during the titration?
A: It has to be clean and dry so you have the right amount of solution taken out from you flask to be…
Q: analysis
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Q: A series of sulfate sample is to be analyzed by precipitation as BaSO4. If it is known that the…
A: Given: In the given problem, sulfate sample is analyzed by precipitation as . Balanced equation is…
Q: What quantity of sample should be taken for the analysis if it contains 16.2% chloride and the…
A: Given that : % of Chloride contained in the sample = 16.2 % Mass of AgCl precipitate to be obtained…
Q: In a precipitation titration of 46.00 mL of a chloride solution of unknown concentration, 31.00 mL…
A: In precipitation titrations, the stoichiometric reaction is a reaction which produces in solution a…
Q: Briefely explain the meaning of the following terms as they relate to this experiment. a) Titration…
A: The brief explanations are given below -
Q: For a tablet containing 1000 mg of vitamin C, calculate the minimum concentration of the NaOH…
A: Given that : Mass of vitamin C = 1000mg = 1000mg×1g/1000mg = 1.00g Volume of NaOH used to…
Q: how would this affect the calculated concentration of the standardized NaOH solution?
A: We have to tell affect the calculated concentration of the standardized NaOH solution
Q: Why is an Erlenmeyer flask preferred over a beaker when performing a titration?
A: Erlenmeyer flask has tapered sides thus it makes more accurate titration than that is from breaker .…
Q: At the start of a titration experiment, a student took a buret reading of 1.65 mL. At the end of the…
A: The student took the following readings: The initial reading, V1=1.65 mL The final reading, V2=22.40…
Q: Suppose in a titration of a monoprotic acid a student needed 31.36 mL of 0.1105 M NaOH to reach the…
A: Answer :- 60.87 g/mol The Molar Mass of unknow monoprotic acid = 60.87 g/mol…
Q: The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.115 M solution of…
A: Net ionic equation for the reaction between iron(II) and dichromate is shown below. Number of moles…
Q: A sample of freshly precipitated and filtered silver chloride weighs 459.0 mg. If 1.00 % of the…
A: The chemical equation representing the decomposition reaction of silver chloride is shown below.
Q: Which is NOT TRUE about performing a BLANK titration? Choose the best answer. It involves…
A: Blank titration is the titration that is done on the blank solution.
Q: What is the purpose of a titration? How is it performed (in general)?
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Q: explain the principles of acid-base titration
A: Acid - base titration is a process of quantitative analysis of determining the concentration…
Q: Use some or all the data below to calculate the concentration of acetic acid (in M) in the Walmart…
A: The titration of acetic acid (vinegar) by NaOH takes place as,…
Q: Through titration with a known standard, we counted that an unknown solution contains 0.048 moles of…
A: Given, Moles of acetic acid = 0.048 mol. The original volume of acetic acid = 120.0 mL. The…
Q: Which of the following techniques would NOT result in a titration error? O a. Rinsing the burette…
A: I am providing solution for the first part only as per the guidelines. Please post other questions…
Q: A sample containing BTEX What is the appropriate quantitative and qualitative analysis method for it…
A: BTEX i.e Benzene, toulene, ethyl benzene and xylene are volatile organic compounds and are very…
Q: In the course of various qualitative analysis procedures, the following mixtures are encountered:…
A: It is given that in a qualitative analysis procedure, mixtures are there which contain Ag+ and Mn2+…
Q: If the concentration of the NaOH that was added was 1.0 M and the volume of oxalic acid being…
A: For NaOH, Molarity, M1 = 1.0 M = 1 mol L-1 Volume used, V1 = 29 mL = 29 x 10-3 L…
Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…
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Q: A 25.0mL acetic acid sample was titrated using exactly 69.72 mL of a 0.30M sodium hydroxide solution…
A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…
Q: 50. The purity of sodium oxalate Na₂C₂O4 (134.00 g/mol) is determined by titrating with a standard…
A: Titration reaction is common quantitative lab method which used to determine the concentration of…
Q: Suppose in a titration of a diprotic acid a student needed 31.84 mL of 0.1105 M NaOH to reach the…
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Q: How many moles of hydrochloric acid were there in the volume of acid added in the titration? ii)…
A:
Q: If the initial volume reading for the second titration was 0.76 mL and the final volume reading was…
A: Interpretation- To determine the volume of iodine solution which is used in the second titration (…
Q: When a standard solution is brought into a reaction, the point at which the reaction is exactly…
A: Titration is a conventional technique to evaluate the quantity of analytical present in a sample…
Q: If 18.50 mL of 0.1173 N Sodium Hydroxide and 20 mL of sulfuric acid were utilized to reach the…
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Q: A 25.0mL acetic acid sample was titrated using exactly 69.72 mL of a 0.30M sodium hydroxide solution…
A: Given reaction is- CH3COOH(aq) + NaOH(aq) → CH3COONa(aq) + H2O(l) i.e- 1 mole of CH3COOH reacts…
Q: In Thiosulfate (Redox Titration), why is there a need for a white background when titrating? the…
A: For the standardization of sodium thiosulfate potassium dichromate and potassium iodide solution is…
Q: In titration, one solution is added to another solution until a chemical reaction between the…
A: The balanced chemical equation for the reaction between the given acid and base is shown below.…
Q: Under these conditions the acid acetylsalicylic (MW, 180) reacts according to: CH3COO-C6H4-COOH + 2…
A: To analyze an aspirin sample, 0.3470 g of crushed tablets are weighed and treated with 50.00 mL…
Q: give a specific example of gravimetry analysis by enumerating the steps of the analysis
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Q: Explain briefly why silver nitrate is an important reagent used in precipitation titrations.
A: The titrant reacts with the analyte which forms an insoluble material and the titration continues…
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- In the Analytical Chemistry laboratory, one of the B.Sc student Ms. Fatma wanted to analyze the presence of Iron(II) ion in the water samples collected from Sohar Industrial Area in the Sultanate of Oman and analyzed by Spectrophotometric method. (1) 250.00 mL of this water sample (Solution A) known to contain unknown amount of FeSO4. She has diluted Solution A by a dilution factor 10 to make 250.00 mL solution, which she labeled Solution B. Using Spectrophotometer, she has measured the absorbance value (0.642) for Solution B at 508 nm using 1.00 cm cell (cuvet). The molar absorptivity value for Fe2* ion at 508 nm is ɛ508 = 30.8 M-1cm1. (i) What volume of the solution A did she require to make the 250.00 mL of Solution В? (ii) in (i)? What instrument should she use to transfer the volume of the Solution A calculated (ii) Concentration of FeSO4 in Solution B. (iv) Concentration of FeSO4 in Solution A. Mass of FeSO4 in Solution A (Show your calculation) (v)(2) In the Analytical Chemistry Laboratory Mr.Yahiya Al Moqbali wanted to prepare KCI solution. He has dissolved 2.634 (+0.002) g of KCI in a 250.00 (±0.08) mL volumetric flask. Calculate the molarity of the solution and express your answer with its absolute uncertainty and give reasonable number of significant figure. [The formula mass of KCI is 74.5513 (±0.001) amu] (Show your Calculation)Q3)a) Discuss the any two applications of Beer’s law with suitable justification. (b) In an analytical laboratory a chemical compound namely Paracetamol (151.163 g/mol) is determined in a sample. A sample weighing 0.0295 g was dissolved in a solvent and diluted the solution to 1 L. The solution has λ max at 243 nm (ε=2.6×104 cm-1 mol-1 L). The solution exhibits an absorbance of 0.638 in a 2 cm cell. Calculate the percentage paracetamol in the sample. (c) Analyze any two causes of non-linearity of curve in the Beer’s law.
- 2) As an example of precision and accuracy of data, suppose the % carbon in a single compound has been measured thrce separate times by 2 different students. The theoretical % carbon is 21.34%. Student 1: trial 1:26.11%, trial 2: 26.24% trial 3: 25.92 %, Avg - 26.09 Student 2: trial 1: 20.35%. trial 2: 22.64 % trial 3: 19.79 %. Avg = 20.93 a) Which student had the more precise data and how can you tell? b) Which student had the more accurate data and how can you tell? 3a) Calculate the % error of Student 1 data in problem 2 above. Show all work below. WATCH SIG FIGSA new analytic instrument is capable of detecting picogram quantities of a chemi-cal substance. How many times more capable is this instrument than one that candetect nanogram quantities of the same chemical?(a) For use in an iodine titration, you prepare a solution from 0.222 2 (+0.000 2) g of KIO3 [FM 214.001 0 (+0.000 9)] in 50.00 (+0.05) mL. Find the molarity and its uncertainty with an appropriate number of significant figures. (b) Would your answer be affected significantly if the reagent were only 99.9% pure?
- A volumetric calcium analysis on triplicate samples of the blood serum of a patient believed to be suffering from a hyperparathyroid condition produced the following data: mmol Ca/L = 3.15, 3.25, 3.26. What is the 95% confidence interval for the mean of the data, assuming no prior information about the precision of the analysis?In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?(a) Show that the formula mass of NaCl is 58.443 (+0.002) g/mol. (b) You dissolve 2.634 (+0.002) g of NaCl in a volumetric flask with a volume of 100.00 (+0.08) mL. Express the molarity of NaCl and its uncertainty with an appropriate number of digits.