If pH (± 0.5 pH units) strips were used to determine the equivalence point at pH=8.5. What is the relative error (%) in pH at the equivalence point? I assumed it should be 0.5/8.5 * 100 = 5.88, rounded to 5.9 for sig figs. but I got the answer wrong. Please help and let me know how to solve this
Q: In which ways can isotopes differ? Select all the possible ways. C a. Size b. Atomic Number c.…
A:
Q: Heat of Solution (ΔHsoln) for NH4NO3 TRIAL 1 TRIAL 2 Mass of NH4NO3: (NH4NO3 = 80.05 g/mol):…
A: To determine: qcalorimeter(cal) moles NH4NO3 ΔHsoln Average ΔHsoln(NH4NO3) %error
Q: Water at room temperature is placed in a flask connected by rubber tubing to a vacuum pump and the…
A: Here with decreases in pressure melting point of water increases so as we put water in vaccum it…
Q: O CHEMICAL REACTIONS Determining the molar mass of an acid by titration An analytical chemist weighs…
A:
Q: Predict the ¹H NMR chemical shift of the circled proton(s) in the structure below. H3C CH3 H A)…
A:
Q: The units for the ideal gas constant are Omol/L.k kPa.g OkPa.L komol O mol-L kPa.k O L.K mol-kPa…
A: In this question we have to find out the unit of the ideal gas constant.
Q: Provide the correct IUPAC name for the compound shown here.
A: IUPAC System of Alkynes: The longest carbon chain containing the carbon-carbon triple bond is…
Q: A certain metal M forms a soluble sulfate salt M₂SO4. Suppose the left half cell of a galvanic cell…
A: M2SO4(aq) gives M+(aq) and SO42-(aq) ions. In the given Galvanic cell, the electrode is the same in…
Q: Discussion of the result of the Charpy test on Mild steel & Carbon steel
A: Charpy test determines the toughness or impact strength of the material in the presence of a flaw or…
Q: Prepare the following three compounds using either a malonic ester synthesis or an acetoacetic ester…
A: Please find the attachment.
Q: What is the final concentration when 250 mL of a 16.0 mol/L nitric acid solution is diluted to 4.5…
A: Since you have asked multiple type questions, we will solve only first questions for you. If you…
Q: ▼ Part A Calculate the number of molecules in 6.00 moles H₂S. Express your answer numerically in…
A: The molecules of H2S in 6.00 moles is = 3.61 x 1024 H2S molecules
Q: It has been known for a very long time that lemon juice can mask the "fishy" smell of cooked fish.…
A: Putrescine(H2NCH2CH2CH2CH2NH2) is a primary amine that is a weak base. Citric acid is a triprotic…
Q: a T CH₂
A:
Q: A 2.5 L canister under a pressure of 150 kPa at 20 °C is compressed to a volume of 1.5 L at 35 °C.…
A: The answer to the following question is-
Q: 8.37 pH 5.0 mL 10.0 mL one: Tartaric acid (H₂C4H₂O6) Maleic acid (H₂CH₂O) Malonic acid (H,C.H, O)…
A:
Q: What the concentration of a solution made by dissolving 25 grams of Na₂CO3 in enough water to make a…
A:
Q: 1. Hydrogen gas can be easily generated in the lab by the following reaction: HCI (aq) - ZnCl₂(aq) +…
A:
Q: How much ice in grams would have to melt to lower the temperature of 342 mL of water from 45 ∘C…
A:
Q: When 236. mg of a certain molecular compound X are dissolved in 40.0 g of benzonitrile (C,H,CN), the…
A:
Q: Question 20 All the test are positive for Lactose except O Benedict Barfoed Molisch Osazone
A: Molish test: It is basically a general test for carbohydrates all the carbohydrates give this test…
Q: Provide the IUPAC name with clear explanation, as well as the retrosynthetic analysis and general…
A: Here we have to write the IUPAC name of the following given compound and it's synthesis from staring…
Q: Identify each of the following as an oxidation or a reduction. Drag the appropriate Items to their…
A: In terms of electron transfers, Oxidation is defined as loss of electrons. That is, electrons are…
Q: ________ is found in carbonated beverages due to the reaction of carbon dioxide with water. Write…
A:
Q: Which is the correct sequence, from left to right, to separate the following ions from each other,…
A:
Q: A 250 ml sample of a saturated Ca(OH), solution is strated with 0.030 M HCl, and the equivalence…
A:
Q: Draw the linear form, Haworth formula and chair conformation(if applicable) for the two anomeric…
A: We know that the pyranose form is a six membered ring having oxygen as a hetero atom while furanose…
Q: Identify the highlighted hydrogens in the molecules below as enantiotopic, diastereotopic, or…
A:
Q: What volume of each solution contains 0.15 mol of KCl? 1. 0.209 M KCl Express your answer using…
A: Given, moles of KCl = 0.15 mol Volume of each solution = ? 1. 0.209 M KCl 2. 2.0 M KCl 3. 0.815 M…
Q: 3. To determine ethanol content in beer using Gas Chromatography (GC) - Flame Ionization Detection…
A: GC-FID technique is a combination of gas chromatography(GC) and Flame Ionization Detection used to…
Q: What is the percent yield when 360 mL of a 0.75 M solution of calcium sulfide is mixed with 450 mL…
A:
Q: Nitrogen gas reacts with hydrogen gas to produce ammonia via the following reaction: Part A If you…
A:
Q: (14) There are how many o bonds and how many bonds in N3 (N.B. the molecule is not cyclic)? You must…
A: Number of σ and π bond can be calculated from the structure of a molecule.
Q: How many grams of LiF would be present in 588 mL of 0.813 M LiF solution
A:
Q: 10) Which of the following reagents with not allow conversion of acetone into bromoacetone? Answer…
A: The Answer to the following question is-
Q: Aniline (C6H5NH₂) is an organic base used in the manufacture of dyes. Calculate the pH and the…
A: Given, The concentration of Aniline ( C6H5NH2 ) = 0.15 M. The Kb of aniline = 4.3 × 10-10 M. The…
Q: j.) HO k.) 1.) 1. KOtBu 2. H3O+ 1. H+, HS 2. H, H₂N 3. H3O+ SH 1. NaBH4 2. H+, H₂O 3. H+
A: These are substitution reactions and also protection and deprotection of carbonyls.
Q: A 1.6-m Ci source of 32P (in NaHPO4), a ß emitter, is implanted in a tumor where it is to 15…
A:
Q: Which of the following solutions has the largest concentration of chloride ions? O 100.0 mL of 0.30…
A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: What is the correct net ionic equation when a solution of Na₂CO3 (aq) is mixed with a solution of…
A:
Q: شه-8 target
A:
Q: For each reaction, identify the Brønsted-Lowry acid, the Brønsted-Lowry base, the conjugate acid,…
A:
Q: If 4.3 g of N₂ is reacted with excess H₂ and 1.53 g of ammonia are collected, what is the percent…
A:
Q: Based on the structures of the compounds above, write the letter symbol of the spot corresponding to…
A: The crude reaction mixture has two or more reactions combined in a different molar ratio. Generally,…
Q: In a 20.0 L steel container, we have only 77.7 g of CO2(g), 99.9 g of N2(g), and 88.8 g of an…
A:
Q: Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers,…
A: Stereoisomer are those which have same molecular formula but have different orientation in 3D space.…
Q: Ethanethiol, C₂H5SH, is an odourous compound added to natural gas so that leaks can be detected. It…
A:
Q: A 2.5 L tank can withstand a maximum pressure of 800 kPa. Calculate the temperature that the tank…
A:
Q: For the reaction below, complete the equation summary table. If an element has no change in…
A: Since, From the definition of oxidation, Oxidation taken place when oxidation number increases,…
Q: The 1H-NMR spectrum of 1-chloropropane shows three signals and the 1H-NMR spectrum of…
A: Given data The 1H-NMR spectrum of 1-chloropropane shows three signals. The 1H-NMR spectrum of…
If pH (± 0.5 pH units) strips were used to determine the equivalence point at pH=8.5. What is the relative error (%) in pH at the equivalence point?
I assumed it should be 0.5/8.5 * 100 = 5.88, rounded to 5.9 for sig figs. but I got the answer wrong. Please help and let me know how to solve this.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- This is a dilution lab of acetic acid. There is 1.0M acetic acid with ph of 2.297, 0.1M acetic acid with ph of 2.69897, and 0.01M acetic acid with ph of 3.69897. They were all filled up to 50ml in a volumetric flask. How do you build the ICE table for the different concentrations?I have attached some images for extra information if needed.In the determination of the water hardness of a river water sample, the pH of the sample was adjusted to 12 instead of 10. Is there a positive error, negative error, no effect, or error could not be determined In terms of the ppm CaCO3 of sample?A 50.00 (±0.03) mL portion of an HCl solution required 29.71(±0.03) mL of 0.01963(±0.0030) M Ba(OH)2 to reach an end point with bromocresol green indicator. The molar concentration of the HCl is calculated using the equation below (attached image): a.) Calculate the uncertainty of the result (absolute error). M=0.02333(±?????) M b.) Calculate the coefficient of variation for the result. CV= (Sy/y) x 100%
- SCE students measured the concentration of HCl in a solution by titrating with different indicators to find the end point.Indicator Mean HCl concentration (M)(± standard deviation)Number of measurementsBromothymol blue 0.09565 ± 0.00225 28Methyl red 0.08686 ± 0.00098 18Bromocresol green 0.08641 ± 0.00113 29Is the difference between indicators 1 and 2 significant at the 95% confidence level? Answer the same question for indicators 2 and 3A student carries out a titration to determine the molar mass and structure of a weak acid A. The student follows the method below. Dissolve a weighed mass of A in 100 cm3 of distilled water and make the solution up to 250 cm in a beaker. Add the solution of A to a burette. Titrate the solution of A with a standard solution of sodium hydroxide, NAOH. (a) What is meant by the term standard solution? (b) Sodium hydroxide is an alkali. What is meant by the term alkali? (c) The student carries out a trial, followed by three further titrations. The diagram shows the initial and final burette readings for the three further titrations. The student measures all burette readings to the nearest 0.05 cm3. Titration 1 Titration 2 Titration 3 Initial reading Final reading Initial reading Final reading Initial reading Final reading 27Students measured the concentration of HCl in a solution by titrating with different indicators to find the end point. (Use the table to find critical F values.) Mean HCl concentration (M) (+ standard deviation) Indicator Number of measurements 1. Bromothymol blue 0.09565 + 0.00170 28 2. Methyl red 0.08681 ± 0.00098 18 3. Bromocresol green 0.08641 + 0.00106 29 Is the difference between Indicators 1 and 2 significant at the 95% confidence level? O Yes O No Fenlculated clegrees of freedom Ecalculated Is the difference between indicators 2 and 3 significant at the 95% confidence level? O Yes O No Fealculated Spooled tcalculated
- In a 1.2 mM aqueous solution of benzoic acid (C,H,CO,H), what is the percentage of benzoic acid that is dissociated? You can find some data that is useful for solving this problem in the ALEKS Data resource. Round your answer to 2 significant digits. |% ?Explain how the concentration of the analyte is computed using the concentration of the analyte consumed in the titration.A pH probe/meter uses the following equations: Ecell = L + 0.0592 log a1 = L - 0.0592 pH Where L = L1 + EAg/AgCI + Easy= constants L1 = - 0.0592 log a2 a1 = activity of analyte solution a2 = activity of internal solution Questions: How will measured pH value be affected vs “real” pH if the temperature of the sample is 30C when pH was measured? How will measured pH value be affected vs “real” pH if HCl in pH electrode, became 0.15M instead of 0.1M? How pH value will be affected vs “real” pH if the glass of the pH electrode is not fully hydrated? Please answer all questions and provide a brief explanation
- What is difference between end and equivalence point?Where Kal = 4.20 x 10-7 Ka24.69 × 10-¹1 X (a) Calculate the fraction H₂CO3, HCO3, CO3², use the following table as your template. (b) Plot_p¹ vs. fraction of H₂CO3, HCO3, CO3² using the plotting guidelines all on same chart. pH [H] “H_co, ан,со, анс, а со α α 1.806 2.020 2.235 2.449 2.664 2.878 3.093 3.307 3.522 3.736 3.951 4.165 4.380 4.594 4.809 5.023 5.238 5.452 5.667 5.881 6.096 6.310 6.525 6.739 6.954 7.168 7.383 7.598 7.812 8.027 8.241 8.456 8.670 8.885 9.099 9.314 9.528 9.743 9.957 10.172 10.386 10.601 10.815 11.030 11.244 11.459 11.673 11.888 12.102 12.317 12.531Write the Henderson-Hasselbalch equation for a propanoic acid solution (CH, CH, CO, H, pK, = 4.874). + log Answer Bank pH pK [A] [HA] Using the equation to calculate the quotient [A /[HA] at three different pH values. [A ] [HA] pH = 4.373 [A] pH = 4.874 [HA] [A] [HA] pH = 5.186