Different masses of aspirin (e.g 10mg, 100mg, 1000mg) used in an acid base titration. what could be the reason for the differences in percentage purity?
Q: .) Give the molecular formula (e.g. C6H12O6) for the following compound. What is the hybridization…
A: Hybridization and number of sigma bonds and lone pairs: If any atom has the sum of lone pairs and…
Q: In a sample of nitrogen, there is 99.63% N-14 atoms and 0.37% of N-15 atoms. What is the atomic mass…
A:
Q: Explain the polar or ionic behaviors of CO, OH- and LiF from their molecular orbital diagrams
A: We know that the molecular orbitals are formed by the interaction of atomic orbitals. Now, here…
Q: 1. List the order of IMF's (lowest to highest) of the organic liquids you used in part 1. Explain…
A: IMF is intermolecular forces present in the molecules such as vanderwaal forces , hydrogen bonding,…
Q: Suppose Brian is in the market for a used textbook and the campus bookstore is having a sale. If the…
A:
Q: For the following reaction, in the first 10.0 s, 0.020 mol of O₂ is produced in a 0.500 L reaction…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: @ b) Br OH Br OH ») x
A:
Q: c) What is the most likely reason why the value of x obtained in the second experiment does not…
A:
Q: Enter an equality for the following medication in stock: 1.8 mg of Coumadin per 1 tablet of…
A: Given → 1. 1.8 mg of Coumadin per 1 tablet of Coumadin 2. 90 mg of Clozapine…
Q: 9. Assign oxidation number to each element, then classify each of the following unbalanced…
A: Oxidation stare: the total number of electrons that an atom either gains or loses in order to form a…
Q: 5. Hydrogen and oxygen react chemically to form water. How much water would be formed if 2.4 grams…
A: Using mole concept easily determines how much moles of products or reactants are formed.
Q: 39 of 48 Which reaction is spontaneous at SATP? O AH=62.5 kJ, AS -1.25 J/K O AH--10.1 kJ, AS=-49.6…
A:
Q: 8.1)The enol content of CH3COCH2CO2Et in hexane is 46% and that in water is 0.4%. The reason for the…
A:
Q: ORT ANSWER. Write the word or phrase that best completes each statement or answers the question. t…
A: Protien are the long chain Amino Acids which are essential part of life .Lipids are triester of…
Q: 4. Draw in all the lone pairs on each structure. Briefly compare the size/shape of each molecule.…
A:
Q: 2. Given the D-glucose molecule below; How many possible stereoisomers does it have? Draw any seven…
A:
Q: A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In…
A: Given , mass of Nitrate (solute) = 562 microgram = 562 X 10-6 gram (As , 1 microgram = 10-6 gram)…
Q: molecular formula
A: As we know that when there is a single bond in any organic structure, then it is believed that it is…
Q: Give the symbol for an element that is 1) a transition metal in the fourth period from the following…
A: The symbol of elements can be written on the basis of the above provided description by using the…
Q: What are ideal, semidilute, athermic, regular, and irregular solutions? If applicable, give…
A: Solution : The homogenous mixture of two or more compounds is called a solution. Different types of…
Q: 12. A solid compound has a mass of 43.25 g. You scrape 2.5 g of the material off of the solid for…
A: Answer: This question is based on the percentage calculation. Given data: Mass of the compound…
Q: (6) Which of the following systems has a negative sign of AS. → H₂Om (A) H₂O (B) 12)→ 12) (C) 2NO)→…
A:
Q: What is the total amount of compound you can recover after the first recrystallization of 5g impure…
A: First we have to eliminate the impurity from the crude. Now the mixture is heated to make NBS…
Q: Please solve all parts 5,6,7
A: As per the rules, only the first three sub-parts can be answered. So answer for only 5, 6 and 7 are…
Q: What is the product of the following reaction? ова де OH OH ОН 오 ОН OH "I A) I B) II C) III D) IV Ш…
A:
Q: #10: Estimate the values of Mw and M for a polymer blend obtained by mixing 20g of a grade of…
A:
Q: Resonance Effects Assessment 1. Draw resonance contributors of the following structures. Utilizing…
A: We know that during the resonance only the π-electron Or loan pair movement takes palce while the…
Q: 17. You have 41 mL L of graduated cylinder, it now reads 77 mL. What is the volume of the pebble?
A: Initial water level=41mL Water level after dropping pebble=77mL
Q: A certified reference material of lead in calcium carbonate is analyzed by a laboratory and found to…
A:
Q: a) The alkene drawn here undergoes an electrophilic addition reaction with HBr. i) Give the IUPAC…
A:
Q: 3) OH x
A:
Q: (5) An ion chromatograph is used for the determination of chloride ions. Seven replicate…
A: The replicate measurements obtained are 20, 21, 18, 22, 20, 22, and 21 μg/L Detection limit or…
Q: (2) Which of the following solutions (solute in a (A) Vitamin C in water (C) NaOH in water (C) Cl₂…
A:
Q: What about question d and e?
A: Given the total water content in 70 Kg body weight = 42 L The 42 L water content remains constant…
Q: A student sets up the following equation to convert a measurement. (The? stands for a number the…
A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…
Q: Q2. Define () the following (in English words). 1. Second law of thermodynamics: 2. Intermolecular…
A:
Q: D. Grupos funcionales D.1 Complete la siguiente tabla COMPUESTO CH3-OH CH3-CH2-CH3 CH₂=CH₂ CH3-O-CH3…
A:
Q: 4 Question 19 of 23 U B N 4+ 8 J to 1 a IAA M 9 K O . Attempts: 0 of 2 used Submit Answer O L P {…
A:
Q: What is the molar mass of glycerol if a solution of 5ml glycerol in 25ml of water resulted in a…
A:
Q: How many grams of solute are present in 645 mL of 0.200 M KBr?
A:
Q: calculate the rate constant of the reaction. O
A:
Q: This is your graph. The rate of reaction at any point in time is given by the gradient of the…
A:
Q: 4. Draw in all the lone pairs on each structure. Briefly compare the size/shape of each molecule.…
A:
Q: A certain gas obeys the Van der Waals equation with a = 0.500 Pa m6 mol-2, and with molar volume…
A:
Q: B F. Match your answers from 2B-E to the spectra below. Re-draw the structures and label each type…
A: Number of signal = number of sets of protons in different electronic environment Position of signals…
Q: The Henderson-Hasselbalch equation (pH = pKa + log([A-]/[HA]) fails at the start of a weak…
A: Answer: Henderson-Hasslebalch equation gives us a mathematical expression to calculate the pH of…
Q: A buffer solution was made by mixing 2.00 L of 1.500 M potassium nitrite with 1.00 L of 1.476 M…
A: Since you have asked a question with multiple subparts, we will answer only first three subparts…
Q: 1. 5. 2. 3. los siguientes compuestos orgánicos de acuerdo a sus grupos funcionales…
A:
Q: What is a genetic disease? What cause of the genetic disease in Chemistry?
A: Given: Genetic Disease & its causes
Q: 2. Ferrocyanide and ferricyanide are a particular kind of transition metal complex. State what that…
A:
Needed urgently... strictly handwritten... give u many upvotes
Step by step
Solved in 2 steps
- In the procedure below for a weak diprotic acid titation experiment what are the independent, dependent, and controlled variables? Prepare your Buret• Condition a 50 mL buret (2x with DI H2O followed by 2x standardized NaOH)• Fill the buret with the standardized NaOH close to but not exactly 0.00 mL Prepare Your Analyte • Your analyte will need to be placed in a 250 mL beaker and should contain thefollowing:*0.5 – 0.75 g KHP** About 100 mL DI water* Magnetic stir bar• Once all contents are in the 250 mL beaker, stir for at least 5 minutes to dissolve. Ifneeded, add a bit more water.* For unknown diprotic acids, use the mass provided by the instructorNext Run the Titration (note you will need to run the titration several times for data collection so you are able to use the average molar mass to find the unknown diaprotic acid).In RPLC, The retention of a basic analyte in RPLC decreases as the mobile phase pH increases. True or False?The retention of a carboxylic acid analyte in HILIC will decrease as the pH of the buffer component of the mobile phase is increased, true or false?
- At any stage of the saponification experiment of ethyl acetate, when the 25mL sample taken from the mixture is taken into a flask containing 0.05M 15mL HCl and titrated with 0.05M NaOH, if the consumption is 10mL, calculate the remaining NaOH concentration without reacting over the reactions.If the test tube used in the determination of the ΔHrxn for nitric acid (neutralization with NaOH) was still wet with water, will the magnitude of ΔHrxn increase, decrease, or remain the same?Please explain.Suppose your colleague was relying on receiving your purified product in order to prepare a dilute aqueous standard solution of benzoic acid e.g. for a titration. She takes 160 mg of your benzoic acid and dissolves it in just enough water so the solution exactly fills a 250 mL volumetric flask. Given that the acid dissociation constant of benzoic acid Ka = 6.3 x 10-5, calculate the pH of her resulting solution.
- how to find culculated ka and literature Ka for acetic acid？Full acid, HOOC = CH-COOH is a biphatic acid and we will label it as H2M. Acid constant data for the two protonation phases of the acid: K H.M+H2O = H, 0++HM- HM +H2O = H, 0++M2– a1 = 1.3x10-2 K.2 = 5.9 x 10-7 Measure 0.1 ml of 0.100 M of malic acid with 0.100M NaOH and measure the H variability as a function of the added base volume. A. Calculate the PH value at the beginning of the titration. B. Calculate the pH value at the first equivalent point. C. Calculate the pH value at the second equivalent point. D. Draw the titration curve in the graph. Indicate in the graph titles and units for the axes.What is a 3 point calibration in titration?
- Iodometric titration of vitamic C with sodium thiosulfate Why was the known excess of iodine generated using iodate rather than weighing out a known excess of iodine?What factor affects the ‘strength’ of a buffer? Why was benzoic acid used as a solvent when making up the glucose stock standard solution?In how much volume of diluted sulfuric acid should you dissolve a multivitamin tablet of approximately 1700 mg of Vitamin C to back analyze 10.00 mL of that solution, with 25.00 mL of 0.01 M KIO3 and 0.04 M thiosulfate to use approximately 8-10 mL of titrant ? You have 25, 50, 150, 250 and 500 mL flasks.