* Do the following problems in your lab notebook 1. Reduce (or simplify) the following to three terms: - 3(27.28+3.26×10*T +0.5×10ʻT"²)– 2(16.81+4.77×10°T-8.5×10°T ²) AC 14.73+0.1272T – р,т
Q: In practice the standard solutions are made by pipetting a known amount of a stock solution with a…
A: Given: Concentration of stock solution = 900 µM And the solution's data given is,
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: Chemistry The sulfur from 4.00g steel is evolved as dihydrogen sulfide gas and titrated with 1.60 mL…
A:
Q: Permanganatometry is used to quantify: A) Iron (II) sulfate B) Zinc sulfate C) Silver nitrate D)…
A: Permanganatometry is a redox titration which is used in quantitative analysis. It is used to measure…
Q: Based on the chemical reactions provided, which of the following is equivalent to KMg-Ind? [Mg2*]…
A:
Q: Solubility Curve for KNO3 150
A: We will calculate mass of solute
Q: ition containing bromate lons (Bro3 ) IS itrated with standard thiosulfate (S203²) solution. The…
A:
Q: When 25.00 mL of unknown were passed through a Jones reductor, molybdate ion (MoO4^2-) was converted…
A: Volume of unknown sample = 25 mL
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: The commercial production of nitric acid involves thefollowing chemical reactions:4 NH31g2 + 5…
A: Molecules or the chemicals that are released by the brain and are carried by the nerve cells to…
Q: 5. NaCIO, 6. AICI, 7. Ni(CN),
A:
Q: Vitamin C (ascorbic acid, C&H&O6, 176.12 g/mol) can be measured by redox titration with iodine…
A: Given: mass of ascorbic acid = 0.315 g volume of I3- solution = 29.2 mL molar mass of ascorbic acid…
Q: What is the reference method for sodium and potassium determination
A: The detailed solution of your question is given below- Since, we know that the Sodium and Potassium…
Q: Write the mass balance and charge balance equation of 0.20 HNO2. Note that HNO2 is a weak acid
A: Solution Given that Equation of = 0.20 HNO2 Weak acid is = HNO2…
Q: A water sample contains only 0.00150 M of La3+. Calculate the maximum concentration of I03 which…
A: We need to find the solubility of La(IO3)3 compounds in the solution.
Q: For which of the following reactions would you predict AHxn° <0 and ASrxn° N2(g) + 3 H2(g) 2 NH3(g)
A: Change in enthalpy (∆H ): if ∆Hrxn < 0 indicates exothermic reaction and ∆Hrxn > 0…
Q: Part II, Determination of the Molar Mass of an Acid Unknown # Run Number 1 3 4 Mass of test tube +…
A: The value of volume of NaOH are given as:
Q: A solution of silver nitrate containing 0.0074 g AgNO3 per gram of water and silver electrodes were…
A: Mass of anode solution after electrolysis =25 g Mass of silver nitrate in the anode solution after…
Q: Ме N. Me solvent, 0 °C to reflux then Ме. N. Ме Me Me + 'N' CI "Ме Ме 42 Me' Lewis acid , 0 °C 41 25…
A: Organic reaction mechanism.
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: 7. Suppose that, when recovering the copper metal, a student did not filter off all of the aqueous…
A: Given:
Q: ppe a V1. The 10.0 mL of hypochlorous acid requires 26.5´mL of 0.120 M chromium (III) nitrate to…
A: Introduction: Titration is the process to find the unknown concentration of the solution using known…
Q: s. Given the following selectivity data (kij) for this ISE, à Chat activity = concentration). erant…
A: Given: Econst=0.197 V0.5M Ca+,0.2MCa2+
Q: very useful in identifying unknowns. Unknowr solution #2 is bright blue. Once you have identified…
A: Cu in its +2 oxidation state exhibit blue color in aqueous solution. The reason for this bule color…
Q: Show your work in details: Cu2+ unknown concentration can be analyzed by electrogravitic analysis…
A: Mass of the electrode before starting the reaction = 0.5559g Mass of the electrode after the…
Q: fraction of sodium hydroxide in this solution after reaction. 2502 Co wwater. Find mass fraction of…
A:
Q: Fe (s) | FESO4(0.30 M) || KIO3(0.50 M), 12(s), pH 4.0 | Pt(s) Given: Fe2+ +2 e Fe (s) EO - 0.44 %3D…
A: Firstly half cell reactions are set. Reaction with highest value of reduction potential will undergo…
Q: 3I- + OCl- + 2H+ ----> I3- + Cl- + H2 : A 25.00 ml sample of liquid bleach was diluted to 1000 ml in…
A: welcome to bartleby, answer to the question is provided below.
Q: The concentration of ammonia in a water sample can be measured by electrode. Why does the pH of each…
A:
Q: Yttrium (III) carbonate (MM = 357.84 g/mol) has a Ksp of 1.0 x10-31. If 15.5 g Y2(CO3)3 is stirred…
A: The solubility reaction of Yttrium (III) carbonate is given by Y2(CO3)3 (s) -----> 2 Y3+ (aq) +…
Q: KMN04 converted to MnO with 5 electron * transfer T. FO Solutions of weak acids always have lower…
A: Oxidation state of an atom is equal to the number of electrons that are shared or lose or gain by…
Q: Instead of using an electrode to collect ions, why electron multiplier is needed as the detector for…
A: Interpretation - To tell about why electron multiplier is needed as the detector for MS instead of…
Q: Data Table 1 No. of Metal Tested Mg2. (MgSO4) Fe2+ (FeSO4) Cu2+ (CUSO4) Reactions A lot of audible…
A:
Q: Given that the formation constant for Ca^2+ i2 10^10.65 and aY^4- =0.30 at a pH of 10.00. 1.How…
A: The question is based on the concept of complexometric titrations. we have to explain the impact of…
Q: In electrochemistry, specific conductance is defined as (1000/N)* k, where N is the normality of the…
A:
Q: 3. What would be the AH,n if the following reaction were reversed (1 pt.)? rxn (s) + 2H,(g)+ 0,(9) →…
A: If the above reaction is reversed then :
Q: If an Ecell of 0.495V was noted when your cell was set-up. What is the solution pH?
A: pH = Ecell/0.0951
Q: A technician finds the molar mass to be 134.8 g/mol and the pK, to be 4.65 after processing a data…
A: Given : Molar mass = 134.8 g/mol pKa = 4.65 To find : Name of the acid Solution : Acidic strength is…
Q: The activity of Zn2+ in a saturated solution with Zn(OH), with 0.0100 M KNO3 (Ksp = 1.20 X10-17, y…
A: Given: Ksp of Zn(OH)2 = 1.20 X 10-17 γ of Zn2+ = 0.676 And γ of OH- = 0.900
Q: 1. Reaction Rates Cupric Oxide is leached in an acidic solution which results in the formation of…
A: Leaching is a process of extracting a metal from its ore by dissolving it in a certain liquid. The…
Q: Chemistry Explain why manganese which has an average minimum exploitable grade of 35% has a higher…
A: The concentration factor is defined as the ratio of average concentration of an element in a mineral…
Q: How many milliliters of 0.05 M EDTA are required to react with the calcium and magnesium in a 0.1414…
A:
Q: You have a sample of approximately 100 mg/L of calcium carbonate and the standardized EDTA has a…
A: To find out that we can use sample directly or not. First we will check for 25 mL of sample, how…
Q: 4 jIn ovder to perjorm a anion exchange column at pH=+.0 buyer is required. Your lab deatles to use…
A: a) The pH of a buffer solution is given by Henderson-Hasselbalch equation. pH=pKa+log [A-][HA]
Q: How will you differentiate the concept of Acids, Alkalis and Salts under topic of properties and…
A:
Q: Why are we adding NH3 and write down the net reaction. CALCIUM PEROXIDE OCTAHYDRATE (CaO2.8H2O)…
A: Calcium peroxide cannot be synthesised through direct reaction of molecular oxygen with calcium…
Q: "Gravimetric form" in gravimetric assay of Barium-ions is: BaSO4 BaCO; BaO BaF2
A: Gravimetric analysis: gravimetric analysis i an analytical a method of quantitative chemical…
Q: Present the calculations to determine the% of CaO in an unknown sample using the equation below for…
A:
Q: The Zn in a 0.8872-g sample of foot powder was titrated with 24.24 mL of 0.01842 M EDTA. Calculate…
A: Given data: The volume of EDTA=24.24 mL=0.02424 L. The molarity of EDTA=0.01842 M = 0.01842 mol/L.…
Step by step
Solved in 2 steps with 2 images
- A technician is setting up a laboratory to standardise ~0.0200 mol dm–3 KMnO4. What mass of Mohr’s salt [FeSO4(NH4)2SO4·6H2O] would the technician be required to weigh out to produce a 5.00 L solution of Mohr’s salt such that 25.0 cm3 aliquots of the salt would require a titre of 20.0 cm3 to standardise the KMnO4 solution?Why are we adding NH3 and write down the net reaction. CALCIUM PEROXIDE OCTAHYDRATE (CaO2.8H2O) SYNTHESIS CaCO3 + 2 HCl --> CaCl2 + CO2 + H2OCaCl2 + 2 NH3 + H2O2 + 8 H2O --> CaO2.8H2O + 2 NH4+ + Cl- 5 g of pure CaCO3 is added in small portions to 10 mL of water and 20 mL of 18% HCl in a 100 mL beaker and mixed with a bottle. During this process, the mixture should be boiled in order to remove the CO2 formed. When the CaCO3 addition is complete, it is observed that a sufficient amount of precipitate is formed at the bottom of the container. The solution is filtered while hot, the excess water is evaporated and cooled with ice water. Thereupon, he says 25-30 mL of 6% H2O2 solution, 5 mL. NH3 and 100 mL water are gradually added with stirring. After stirring for a while, the crystals formed are filtered, washed several times with water and dried in a desiccator.Discuss the general steps in gravimetric analysis.
- I would need help finding the conductance values for these ions: (Please explain) Ion / compound Conductance Na+ H3O+ SO4-2 OH - CH3COO - Cl – HCl NaOH NaCl CH3COOH H2O (l)A colored solution of concentration 0.0248 mol/L has an absorbance of 0.353. What is the concentration a solution of the same solute with an absorbance of 0.627? Assume that the same sample cell is used for both readings. Report your answer to 3 significant figures.Balance the following chemical equation using the smallest possible wholenumber coefficients: P4 + Cl2 → PCl3A. 2 P4 + 6 Cl2 → 8 PCl3B. P4 + Cl2 → 4 PCl3C. P4 + 6 Cl2 → 4 PCl3D. P4 + 16 Cl2 → 4 PCl3
- The solubility of borax, which is made up of sodium tetraborate (Na2B4O5(OH)4 8H2O), was analyzed. The dissolution of borax is: Na2B4O5(OH)4 • 8H2O(s) ⇌ 2 Na+(aq) + B4O5(OH)42–(aq) + 8 H2O(l) A 50 mL saturated solution was prepared. After filtration of solution, 5 mL aliquot was transferred to a flask and titrated using 0.432 M HCl. The endpoint was found to be 4.73 mL of the titrant. Tetraborate anion (B4O5(OH)42-) is a weak base which reacts with HCl like the following reaction: B4O5(OH)42–(aq) + 2 H+(aq) + 3 H2O(l) ⇌ 4 H3BO3(aq) What is Ksp expression for the dissolution? What is the tetraborate ions concentration in the filtrate? What is the molar solubility and Ksp of borax if the titration was done at room temperature (298 K)?A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Answer should be 82.41 % (w /w)]1. The standard solutions of iron(III) thiocyanate (solutions of known concentration) were prepared for you by mixing the solutions as shown in Table 1.a. Because of the very high concentration of KSCN used in each test tube, you can assume essentially all of the Fe(NO3)3 that has been added has reacted to form FeSCN2+ (by Equation 2, in the Background). Calculate the molar concentration of Fe(NO3)3 in each standard after it is diluted with the other solutions, which equals the concentration of FeSCN2+ formed in each sample (show your work for at least one of these calculations).These are the concentrations that were used in the standard curve. I have the table and the equation 2 on the top attached
- Magnesium Chloride is available as magnesium chloride hexahydrate in an injectable solution that supplies 1.97 mEq of magnesium per milliliter. What is the percent strength of magnesium chloride hexahydrate in this solution?A student investigated the stoichiometry of the reaction of zinc (Zn) with HCl solution and reported the following data. When 0.2158 g of Zn reacted with 10.00 mL of 1.000M HCl, 82.062 g of water was displaced. A total of 36.00 mL of 9.501 x 10-2M NaOH solution was required to titrate the HCl remaining in the reaction mixture at the end of the reaction. The room temperature was 27.0°C and the barometric pressure was 777 torr. The gram atomic mass of Zn is 65.38 g mol-1. The density of water at 27.0 °C is 0.9965 g mL-1 and its vapor pressure is 27.0 torr. R = 8.21 X 10-2 L-atm K-1 mol-1 a) determine the volume of the water displaced. b) Calculate the pressure of the H2 collected. c) Calculate the number of moles of H2 collected, using the ideal gas equation. d) Calculate the number of moles of HCl originally present in the reaction flask. e) Calculate the number of moles of HCl remaining in the flask at the end of the reaction. f) Calculate the number of moles of HCl reacting. g)…When jump-starting a car with a dead battery, the ground jumper should be attached to a remote part of the engine block. Why?