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
- Formulate a hypothesis regarding the solubility of aspirin at different pH.The experimentA) Three teaspoons of water (approx. 15 ml) were added to one tablet said to contain 300 mg of aspirin. Fizzingwas observed. Most of the tablet dissolved, but there were some solid particles. By heating the mug in amicrowave for 10 second increments until the water came to the boil (approx. 3x), all of the solid particlesdissolved. The solution was left to cool to room temperature and then placed in a fridge and NOTHINGHAPPENED. Try this yourself if you can spare two aspirin tablets, your results might look different.• Questions to ask:1. What might the fizzing bubbles be?2. Can you give a chemical explanation?3. Can you write a chemical reaction equation with aspirin reacting with something to give a gas and aspirinin another form?4. What might be the formulation (what the manufacturer mixes with aspirin in making the tablet) “trick”for aspirin to improve solubility?5. How does this compare with…Suppose that extra volume (more than the actual volume) of 0.2 M NaOH solution was used to reach the end-point in the titration process for the determination of the % purity of aspirin sample (0.5 g). Which of the following is correct? The calculated and the actual percent purity values for the aspirin sample will be the same, since the extra added volume of NaOH solution has no effect on the % purity determination for the aspirin sample. We need to know the actual volume (the real volume that should be used in titration) as well as the used volume of NaOH solution to make a true comparison between the actual and the calculated % purity values for the aspirin sample. The calculated % purity value will be lower than the actual % purity value for the aspirin sample. The calculated % purity value will be higher than the actual % purity value for the aspirin sample.What is the Qsp of a solution mixture Al(OH)3 formed from 10 mL 1.00M C6H5NH2 and 15 mL 0.10M Al(NO3)3?
- 3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww wwIn 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) Find the pH of a 1.00 L solution prepared with 12.43 g of base (CH2OH)3CNH2 (MW =121.135 g/mol) plus 4.67 g of its conjugate acid (CH2OH)3CNH3Cl (MW = 157.596 g/mol).(b) How many mL of 0.500 M NaOH should be added to 10.0 g of (CH2OH)3CNH3Cl to give a pH of 7.60in a final volume of 250 mLConsider the pKa of (CH2OH)3CNH3+ = 8.072
- 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%Mention the types of volumetric titration and briefly point out their differences.Topic: Standardization of acid and base with back titration Note: Include up to 4 decimal places Kindly explain the process Thank you!
- A 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 27What is the percentage of total acid expressed as acetic acid in a sample of vinegar if 4.0g of vinegar requires 29.5ml of 0.153N KOH for an endpoint with phenolphthalein indicator? (molar mass of acetic acid: HC2H3O2 = 60.05g/mol a. 3.995% b. 6.776% c. 8.650% d. 12.68%A series of solutions containing NaOH, Na.CO, and NaHCO, alone or in compatible combination, was titrated with o.1202 needed to titrate 25.00-mL portions of each solution to (1) a phenolphthalein and (2) a bromocresol green end point. Use this information to deduce the composition of the solutions. In addition, calculate the mass in milligrams of each solute per milliliter of solution. M HCI. Tabulated below are the volumes of acid (2) (1) (а) 22.42 (Ъ) 15.67 (c) 29.64 (d) 16.12 (е) о.00 22.44 42.13 36.42 32.23 33.333