Q: How can you explain negative deviation as solution is prepared by mixing chloroform and acetone?
A: According to Raoult’s law, when in a binary solution, there are present two volatile liquids, than…
Q: If you used 5 ml of 1-hexene (d=0.673g/ml), 2.0 ml of 2 M borane in THF, and 1.2 ml of 30% H2O2 (30…
A: The balanced chemical reaction is as follows:
Q: Student added 1 ml of 2 M Phenyl Magnesium Bromide to a conical vial containing, 3 ml water and…
A: The given reactants are Methyl benzoate and Phenyl Magnesium Bromide (PhMgBr), a Grignard reagent.…
Q: You started with 84g of aniline and 28 ml of acetic anhydride. Give % yield of acetanilide. 47
A:
Q: The petition coeficiente between benzene and water for carta iLife is approximately 3.9 .you are…
A: The given question employs the Nernst Distribution Law. The partition coefficient between the amount…
Q: Prepare 500 mL of 10% formalin from commercial formaldehyde
A: Given Volume of Stock Solution = V1 Concentration of Stock = C1 Volume of Working Solution = V2…
Q: palmitoyl chloride A B Distilled acetone, Reflux (1H) C Alanine, Reflux (18 H) Methanol,…
A: The reactant is palmitoyl chloride, which is an acid chloride. The reactant undergoes 3 different…
Q: Propose an alternative method for purifying the product today. Briefly describe how you would…
A: The solution of the question is given below: No. of moles can be calculated by = given mass / molar…
Q: calculate the mass of maleic anhydride that corresponds with the number calculated in number 3…
A: • The values provided in the question are:- i) Number of moles of maleic anhydride, n = 18 mmol…
Q: I have to make a solution that contains Toluene, ethyl acetate, and glacial acetic acid With a ratio…
A: Given, A solution that contains Toluene, ethyl acetate, and glacial acetic acid With a ratio of…
Q: Prepare 250ml of 70% and 90% ethyl alcohol from 95% ethyl alcohol using the formula: C1V1=C2V2.
A: The concentration of a solution can be expressed in various units such as molarity, molality, m/v%,…
Q: Although we use pre-cast gels in this lab it is common practice to make your own polyacrylamide gels…
A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…
Q: Weight of Anhydride and Evaporating Dish A Weight of Water Lost Weight of Anhydride Experimental…
A: To calculate these values , we would use the given formulae . First we would calculate the mass of…
Q: What is the dilution factor if 10 µL of extract is added to 990 µL distilled water?
A: Volume of extract = 10 μL Volume of distilled water = 990 μL Dilution factor = ?
Q: In preparation of dibenzalacetone. You obtained bg of product. Calculate percent yield. 25g Acetone…
A: Volume of benzaldehyde used = 169 mL Volume of acetone used = 129 mL Actual Mass of dibenzalacetone…
Q: In a lab experiment, 3.4g of methyl orange product was produced using the following: 2.25g…
A: Methyl Orange is produced from sulphanilic acid ,sodium nitrite, and N,N-dimethylanilin. We have to…
Q: SHOW COMPLETE HANDWRITTEN SOLUTION
A: We have to Determine the values for a 0.020 m (NH4)2CrO4 solution. i) Ionic strength, I (in…
Q: 8. A student weighs out exactly 0.500 grams of. p-aminophenol and allowed it to reac with excess…
A:
Q: If an aspirin synthesizes 2 grams of salicylic acid and 5 mL acetic anhydride were used. What is the…
A: we will establish stoichiometric relation between the mole of reactant and mole of product
Q: Salicylic Acid with Millon’s reagent – To 2 ml. of salicylic acid solution, add 5 drops of Millon’s…
A: Millon’s reagent is prepared by mixing mercury in HNO3. When mercury(Hg) is mixed with HNO3(aq), it…
Q: Grignard synthesis begins with 10 ml of 3 M Phenylmagnesium Bromide and 1 grams of Methyl Benzoate,…
A: In this question, we want to determine the value of theoretical yield and percent yield of the…
Q: How would you make 500.0 mL of a version of Coomassie Blue stain for gels? Its composition is the…
A: We need to prepare 500 mL of a version of Coomassie Blue stain for gels, The (w/v%) for Coomassie…
Q: Given that you have 10% solution of methyl parahydroxybenzoate and you use 0,1% how many grams of…
A: Given, 10 % solution of methyl parahydroxybenzoate Used : 0.1 % Required, Grams…
Q: 3. 5 mL acetic anhydride is to be added to 2 g salicylic acid. To how many equivalents (acetic…
A:
Q: Please report the following: a) Volume of aniline? b) Volume of acetic anhydride? c) Mass of pure…
A: From the given data the recovery acetanilide mass is 6.592gm
Q: CuSO4(NH3)3(H2O)2. If you started with 6.0 g of CuSO4•5H2O and 10.0 mL of 15 M NH3, how many moles…
A: Reaction is given as
Q: The literature melting point of 1-phenylcyclohexanol is 59-62 °C. The melting point range you…
A: An impure substance will melt at a temperature lower than the melting point of the pure substance.…
Q: calculate the theoretical yield of a reaction between 2 mL of thionyl chloride and 10 mmol of…
A: Density of thionyl chloride = 1.631 gm/mL So, 2 mL thionyl chloride = 2*1.631 gm = 3.262 gm Moles…
Q: How to prepare 0.10M of sodium thiosulphate
A: Given that molarity of sodium thiosulphate (Na2S2O3)is 0.10 M Molar mass of Na2S2O3 is 158.11 g/mol
Q: (b)* The structures for six naturally occurring organic compounds with pleasant smells, B-G, are…
A:
Q: Melting point: 98-105 Percent yield: 60% did you successfully make pure product? Explain.
A: A question based on IR spectroscopy, which is to be accomplished.
Q: Benzoyl Peroxide dissolve comidone or acne
A:
Q: Prepare 500 ml of 70% and 90% ethyl alcohol from 97% ethyl alcohol using the formula: C1V1=C2V2.
A: The detailed solution of your question given below-- Using the given formula we can find the answer…
Q: How many moles and grams are in 15 mL of a 5% Adipoyl Chloride in Cyclohexane Solution
A:
Q: Multistep synthesis of Lidocaine Lab 1) How many grams of starting material do you need? It is…
A: Answer of 1):- 1 mole of any compound corresponds to its molecular weight. To convert the given mole…
Q: what is the limiting reagent with 30 mL of ethanol and 20 mL of acetic acid?
A: First we have to know about Limiting reagent : It is also known as limiting reactant. The reactant…
Q: An extra strength Tylenol caplet contains 500 mg of acetaminophen (C8H9NO2) as one of its active…
A: a) The molecular formula of acetaminophen is C8H9NO2 Hence molar mass of acetaminophen = Atomic…
Q: The melting point of acetanilide is 114.3 C. The melting point of the crude acetanilide was 113 C.…
A: A question based analytical process that is to be accomplished.
Q: how to get moles with only using the information below. Molecular Mass (g) Moles Molar Density…
A: We have three compounds whose moles we have to find out from the given information. We will make use…
Q: Please help me answer the following question. It will be a big help, thank you! *What is the % v/v…
A: Methanol (CH3OH) - Solute for the given solution volume of solute (CH3OH) = 10.0 ml Volume of…
Q: 12. If 4.0 g of acetanilide are mixed with 1.5 mL of 16M nitric acid and excess sulfuric acid, then…
A:
Q: Cinnamaldehyde is a naturally occurring compound present in cinnamon. Cinnamaldehyde can be…
A:
Q: How many mL of resorcinol monoacetate should be used to prepare 1 pint of 15% (v/v) lotion?
A: Given, The volume of resorcinol monoacetate should be used to prepare 1 pint of 15% (v/v) lotion…
Q: 2. % Yield of 4-bromoacetanilide for the purification ster = (recrystallized yield/ crude yield) x…
A: Yeild purified = 85 mg = 0.085 g (As 1 mg = 10-3 g ) Theoretical yeild = 0.163 g
Q: A 10-mL aqueous solution of acetaminophen was extracted with 10 mL of octanol. The initial aqueous…
A: Kow of Acetaminophen is = - 0.0101
Q: How do you prepare a 100mL solution of 5% acidified methanol?
A: The given solution is 5% acidified methanol.
Q: How to dilute 1.00M solution of formic acid to 40mL of 0.050 mol formic acid?
A: Given 1.00 M to 50 ml of 0.050 mol Used dilution law M1V1 = M2V2
Q: How many grams of ketoprofen powder is required to be mixed to Petravan® cream base to make 180 g…
A: we have to calculate grams of ketoprofen powder needed to make 180g of ketoprofen 40 % (w/w) cream
Q: percent yield?
A:
Discuss low percentage yield in the preparation of p-Nitroaniline.
Step by step
Solved in 2 steps
- You started with 84g of aniline and 28 ml of acetic anhydride. Give % yield of acetanilide. 12:04 PM 10/23/2021 白Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample.Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample. The stated should be 104.5, how??
- When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with 0.0340 M KIO3(aq) to a purple/blue endpoint (given by a starch indicator), the volume of KIO3 used is 29.80 mL. If 60 mg of ascorbic acid is the recommended dietary allowance (i.e., 100% of the RDA), then what is the % RDA for the Vitamin C in the tablet? KIO3(aq) + 5 KI + 6 H+ → 3 I2(aq) + 3 H2O I2 (aq) + ascorbic acid → 2 I- + dehydroascorbic acidThe mixture contains benzoic acid, 2-napthol, and naphthalene. Dissolve the mixture in the polar solvent ether. When you react the mixture with 10% NaHCO3(sodium bicarbonatea weak base in aqueous solution) reacts with benzoic acid and forms sodium benzoate an ionic compound (similar to NaCl) that dissolves in aqueous solution (heavier than ether in density) and goes to the bottom of the centrifuge tube or to the bottom of the separatory funnel forming two layers. Then remove the bottom aqueous layer and collect in a beaker labeled as bicarbonate extract. Acidify the bicarbonate extract in the beaker to give benzoic acid. The top ethereal layer contains in the centrifuge tube or separatory funnel 2-napthol and naphthalene. To this top layer add 10% NaOH (sodium hydroxideis a strong base in aqueous solution reacts with only 2-napthol, a weak acid forming 2-napthoxide an ionic compound soluble in aqueous solution (similar to NaCl) that goes to the bottom of the centrifuge tube or to…How much of the suspending agent is needed to prepare a 60-mL preparation of Aluminum hydroxide gel based on this formulation? Ammonium alum 800 g Sodium carbonate 1000g Peppermint Oil 0.01% (0.01 g/100mL) Sodium benzoate 0.1% (0.1 g/100mL) Purified water, qs ad. 2000 mL a. 0.06 g b. 30 g c. 24 g d. 0.006 g
- Which ONE of the following is the correct amount of hydrocortisone contained in 50g of 0.5% (w/w) cream? 5g 2g 1g 0.25g 0.125g А. В. С. D. Е.The following compounds are available as 0.10 M aqueous solutions: pyridine triethylamine m-nitroaniline NaOH phenol HCIO HCIO4 (рКь = 8.82) (pKb = 3.25) (pKb = 11.53) (K₂ = 1.1 × 10-10) (K₂ = 2.9 × 10-8) Which two solutions could be combined to prepare a pH 6.7 buffer? HCIO and NaOH phenol and NaOH m-nitroaniline and HCIO4 pyridine and HCIO4• How many grans and how many mL of 40.0 wt-% urea solution (density 1.111 g/mL) are required to react with 4.00 mol of Fe3+ in the following reactions? • (H2N)2CO + 3 H2O → CO2 + 2 NH4+ + 2 OH- Fe3+ +3 OH- + (x-1)H2O - FEOOH x x H2O(s)
- In what proportion may the Manufacturing pharmacist mix 20%, 15%, 5% and 3% ZnO to produce 10% ZnO ointment?During your first day on the job as a research assistant, you are preparing 50 mL of hybridization solution with the following components and working concentrations: 50% formamide 5X sodium salt citrate 0.5% sodium dodecyl sulfate You start from the following concentrated stock solutions: 100% formamide 20X sodium salt citrate 20% sodium dodecyl sulfate How much of each concentrated stock solution and water will you add?Concentration of Reagents (NH4)2S2O8 KI Na2S2O3 0.25 M 0.22 M 0.19 M Volumes of Solutions S₂082 (mL) Starch soln (mL) KNO3 (mL) EDTA soln (mL) KI (mL) S₂O32- (mL) x 5 9.7 0.9 26.4 0.5 9.9 1.1 Using the above data determine the concentration of I at the moment the reaction begins. HINT: This is a mixing problem. Determine the total number of moles of I and divide this amount by the total volume (in L). Be careful... If you go back and try this exercise again the values will change. Read the question carefully! Answer: