In the beginning of the procedure, you will combine 1g of 3-nitrophthalic acid along with 2 mL of 8% aqueous hydrazine solution in the test tube and carefully heat the mixtur until the solid dissolves. What is the identity of the solid? ****** O,N. „NH3 N. O,N. NH3 NH3 O,N. O,N. N-NH, A Which of the following element is important to generate chemiluminescence of luminol? охygen iron nitrogen O phosphorus carbon
Q: [OH"]
A:
Q: Describe a procedure to synthesize the ester ethyl ethanoate, starting from ethene...
A: Ethene upon hydration in presence of acidic medium gives ethanol Ethanol further oxidised into e...
Q: O2 behaves as a van der Waal's gas. Given Tc=154.8K, Pc=50.8 bar, Zc=0.3008. Compute for the followi...
A:
Q: A solution is prepared that is initially 0.23 M in pyridine (C,H,N), a weak base, and 0.47M in pyrid...
A:
Q: What are the common processed minerals present in cosmetics? O talc and calcium bicarbonate O carbox...
A: Common mineral present in cosmetics are...
Q: (CH3)3CCI (1 equiv) AICI3
A:
Q: The concentration of hydroxylamine in a solution is 0.71 M. What is the pH of the solution? The Kb o...
A: Given :- [HONH2] = 0.71 M Kb for HONH2 = 1.1 × 10-8 To calculate :- pH of solution
Q: A 10.00-L vessel at 515 K initially contains HI(g) at a pressure of 5.60 atm; at equilibrium, it is ...
A:
Q: A beaker with 195 mLmL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The tot...
A:
Q: Which of the following is not a factor that could increase the rate of chemical reaction? O Increase...
A: ->Arrhenius equation is applicable to determine effect of temperature on rate of reaction.
Q: 100 4000 3500 3000 2500 2000 1500 1000 500 Cm- 히1342- 2955 1455- 1373- 1326- 1102-
A: Degree of unsaturation=2C+2+N-H-X2C= no. of carbons.N= no. of nitrogens.H = no. of hydrogens.X = n...
Q: Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select "...
A: Assign priorities to the groups attached to the chiral centre as per CIP rule(Cahn-Ingold-Prelog) If...
Q: half-life
A:
Q: molar mass
A:
Q: A first-order reaction has rate constant of 1.89 x 10 at 25 "C. a What fraction aof the starting mat...
A:
Q: A 1.50 M aqueous solution of methanol (CH3OH) has a density of 0.976 g/mL. What is the molality of t...
A: Molality of the solution is defined as the no of moles of solute present per kg of solvent. It is r...
Q: 1. Dess-Martin Periodane CH,CI, ÓH 2. CH,MgBr, ether 3. H,Ö* Work-up HO. OH HO OH OH
A: Alcohol reacts with Dess-Martin periodane in presence of CH2Cl2 . Dess-Martin periodane in presenc...
Q: For the stepwise dissociation of aqueous HaPO, which of the follawing is a conjugate acid-base pair?...
A: conjugate acid–base pair It consists of two substances that differ only by the presence of a proton ...
Q: Question 16 of 24 Submit Predict the location where a new substituent will be added when this aromat...
A:
Q: 29. Which of the molecules, listed below, does have a triple bond in its Lewis Electron-Dot structur...
A: Given molecules: A) C2H2 B) N2H2 C) O2 D) CS2 E) CO2 We have to find the molecule that has a triple ...
Q: Describe the relationship between each of the pairs of isomers shown by recording Constitutional, Co...
A: -> After flipping we get conformation isomer.
Q: Directions: Identify the type of IMFA for the following substances and answer the questions that fol...
A: Intermolecular forces of attraction:
Q: For the experiment "limiting reactant" and after filtering the precipitate, you checked the filtrate...
A: The reagent which is completely consumed in a reaction is known as limiting reagent. It also decide...
Q: e empirical formula of ti
A:
Q: Mg + Zn(NO3)2 Zn + Fe(NO3)2 Fe + Mn(NO3)2 Sn + Ca(NO3)2 Mn + SnCl4
A: The net ionic equation is obtained after eliminating spectator ions from total ionic equation.
Q: What are the signs of AH°, AS" and AG° for the reaction of dissociation of N2 moiecuie to two nitrog...
A: Since there is triple bond between two N atom hence breaking of triple bond is quite difficult requi...
Q: Liquid hexane (CH,(CH,) CH, will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (C...
A: The complete combustion reaction of hexane + O2 is 2C6H14 + 19O2 --------> 12CO2 + 14H2O
Q: Which of the molecules below is the expected major product of the following reduction? Na. NH)
A:
Q: Consider 3-methylpent-2-ene, if it undergoes hydroboration, which of the following final product is ...
A: Given - compound 3-methylpent-2-ene
Q: 5. The product(s) of the following reaction Mow CH2-CH2 excess HBr CH2 is/are: heat Od CH2 MAD (A Io...
A: HBr dissociate and formed H+ and Br-,where H+ act as a electrophile and Br- act as a nucleopile
Q: Q5A.How many grams of Anilin C6H5NH2 should be dissolved in water to -10 prepare a solution of 1 lit...
A: Volume of solution = 1L [OH- ] = 2 × 10-10 M Kb = 4 × 10-10
Q: Determine the Miller indices for the planes shown in the given unit cell.
A: Determine the Miller indices for the planes shown in the given unit cell.
Q: Calculate the pH of 0.030 M Ba(OH), solution. 12.78 O 1230 O 122 O 12.48 12.16
A:
Q: Which of the following is the correct equilibrium law for the following reaction? N2(g) + 3H,(g) 2NH...
A: Equilibrium constant expression:
Q: Carbon dioxide and water react to form methanol and oxygen, like this: 2 CO,(9)+4 H,0(9)→2CH,OH(1)+3...
A:
Q: 18. Determine the pH of a 0.227 M C6H5NH2 solution. The Kb of C6H5NH2 is 4.0×10-10. CHEM 1036' а. 13...
A: pH is defined as negative logarithm of concentration of hydrogen ions.
Q: Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid...
A: Volume of tank = 75.0 L Initial number of moles ...
Q: 17. It is known that the adsorption of carbon monoxide is molecular adsorption on the surface of nic...
A: Adsorption is a physical process in which one substance get attached physically on the surface of an...
Q: Determine the element which is oxidized, element which is reduced, oxidizing agent, and reducing age...
A:
Q: he molar concentration of N
A:
Q: Use the observations about each chemical reaction in the table below to decide the sign (positive or...
A:
Q: What is the percent yield of CO 2 if the reaction of 10.0 grams of CO with excess O 2 produces 14.0 ...
A: Using stoichiometric ratio we can determine how many moles of CO2 produce and from that we can calcu...
Q: Consider the reaction: H + ¿n → 2¾H + ¿n + _}H. Calculate the energy change for this reaction. Is er...
A: Energy relesed in a nuclear reaction is, E= E=Δm×931MV
Q: CH Methyl Benzoate Band Intensity Assigned to the link Frequency (cm') Vibrational mode M IR Methyl ...
A: We have to assign the IR spectrum of methyl benzoate. Here the ester C=O stretching frequency is low...
Q: How many hydrogen atoms will an 8-carbon alkane possess? a. 12 b. 14 c. 16 d. 18
A:
Q: Identify the criteria which compounds must meet in order to be considered aromatic. (Select all appl...
A: ->Aromatic compounds are most stable and antiaromatic compounds are least stable.
Q: Which of the molecules below is the expected major product of the following reduction? HC- CH Lindla...
A: Lindlar catalyst reduces alkyne to cis alkene.
Q: In a gene mapping experiment, DNA from a prototrophic E. coli strain is transformed into an E. coli ...
A: The correct answer is given below
Q: Explain the relation of chemical shifts to the formula and NMR data givemn? 1. C9H1204S S#769027 360...
A: The solution of the question is given below:
Q: What is the process of naming molecules?
A: We have to correct the IUPAC NAME of the following compound. Some points necessary while writing IUP...
Step by step
Solved in 2 steps with 2 images
- Please type all of the parts to this question occordingly to the instructions. Here is an example of a formal procedure based off of the experiment presented in Mohrig:Sodium hydroxide (4.6 g) was dissolved in water (25 mL). This solution was added to a 100 mL round bottom flask along with methyl salicylate (2.0 mL) and a stir bar. The mixture was heated at reflux for 15 min and then progressively cooled to 5 °C. The solution was acidified with 3M sulfuric acid (15-20 mL), and the resulting solid was collected by vacuum filtration. The crude salicylic acid was recrystallized from water to yield ???? g of final solid. The melting point and IR were taken to assess purity. Calculate the molarity of the solution of sodium hydroxide that is used.a. M = b. If the original procedure is the base scale (100%), how far are we scaling down the reaction when using 0.75 mL of methyl salicylate? (Example: the original uses 2.0 mL, if we were to use 1.0 mL, we would be scaling the reaction down…When 10 g of activated carbon is mixed with 1 M 100 ml of acetic acid solution and filtered, a 20 ml sample taken from the filtrate is diluted to 100 ml with distilled water and titrated with 1 N NaOH solution besides the ffindicator, and find the percentage of acetic acid adsorbed as 5 ml of NaOH is consumed. (Masetic acid = 60 gr / mol).A sample of anhydrous NaHCO3 (FM = 84.007) is suspected to be contaminated with eitherNaOH (FM = 39.997) or Na2CO3 (FM = 105.989). To verify the suspicion, a 0.7483 g sample was dissolved to prepare a 50.00 mL solution, and a 10.00 mL aliquot was taken to prepare a 100 mL solution, where 25.00 mL was analyzed using double flask method. If the sample requires 0.45 mL of standard 0.0125 N HCl to reach the phenolphthalein endpoint and 35.95 mL to reach the bromcresol green endpoint, calculate the percentage composition (in %w/w) of all the basic components in the sample.
- A sample of anhydrous NaHCO3 (FM = 84.007) is suspected to be contaminated with either NaOH (FM = 39.997) or Na2CO3 (FM = 105.989). To verify the suspicion, a 0.7483 g sample was dissolved to prepare a 50.00 mL solution, and a 10.00 mL aliquot was taken to prepare a 100 mL solution, where 25.00 mL was analyzed using double flask method. If the sample requires 0.45 mL of standard 0.0125 N HCl to reach the phenolphthalein endpoint and 35.95 mL to reach the bromcresol green endpoint, calculate the percentage composition (in %w/w) of all the basic components in the sample.What is the purpose of adding KSCN near the end of the unknown analysis? Give the reaction formulaTabulate advantages and limitations of microwave-induced combustion over microwave assisted acid digestion sample preparation methods prior to spectroscopic metal detection in carbon rich matrices.
- A chemist received different mixtures for analysis with the statement that they contained NaOH, NaHCO3, Na2CO3, or compatible mixtures of these substances, together with inert material. From the data given, identify the respective materials, and calculate the percentage of each component. 1.000g samples and 0.2500N HCl were used in all cases. (A) For Sample W: With PP, 24.32ml was used. A duplicate sample required 48.64ml with MO. (B). For Sample X: The addition of PP caused no color change. With MO, 38.47ml of the acid was required. (C). For Sample Y: To cause a color change in the cold with PP, 15.29ml of the acid was necessary, and an additional 33.19ml was required for complete neutralization. (D) For Sample Z: The sample was titrated with acid until the pink of PP disappeared; this process required 39.96ml. On adding an excess of the acid, boiling, and titrating back with alkali, it was found that the alkali was exactly equivalent to the excess acid added.A sample of anhydrous Na2CO3 (FM = 105.989) is suspected to be contaminated with either NaHCO3 (FM = 84.007) or NaOH (FM = 39.997) To verify the suspicion, a 0.7483 g sample was dissolved to prepare a 50.00 mL solution, and a 10.00 mL aliquot was taken to prepare a 100 mL solution, where 25.00 mL was analyzed using single flask method. If the sample requires 27.50 mL of standard 0.0125 N HCl to reach the phenolphthalein endpoint and another 28.40 mL to reach the bromcresol green endpoint, calculate the percentage composition (in %w/w) of all the basic components in the sample.8. A student was asked to find the acid and basic radicals in six simple salts provided to him labeled as A,B,C,D,E and F. When he examined them, he observed that sample B was blue in colour and the remaining five salts were white. Answer the following questions. a. Why is concentrated HCl used in performing the flame test and not any other concentrated acid? b. What clue does this blue colour give about sample B? c. What is the importance of a negative test in salt analysis? d. The student is aware that he has to classify the anions into groups. What is the basis of this classification? e. Describe one test which distinguishes a bromide ion from a nitrate ion. f. The student observed that when dil HCl was added to a pinch of sample A. it gave brisk effervescence which turned lime water milky, while sample E gave a gas with rotten egg smell with the same reagent. Identify the acid radicals in sample A and E from the above observation and write the balanced equations involved
- A 30.00-L air sample was passed through an absorption tower containing a solution of Cd+2, where H2S was retained as CdS. The mixture was acidified and treated with 10.00 mL of 0.01070 M I2. After the reaction: S-2 + I2 S(s) + 2 I- was complete, the excess iodine was titrated with 12.85 mL of 0.01344 M thiosulfate. Calculate the concentration of H2S in ppm (w/w); use 1.20 g/L for the density of the gas stream. Molar Mass: H2S = 34.082Please help me calculate the theoretical yield of [Ru(phen)3)][PF6]2 as seen in the procedure below!Which of the conditions below would be correct for the transformation below 1. KMnO4, NaOH(aq) 2. H3O+ 2. H₂CrO4 (aq) 3. PCC in CH₂Cl2 4. (COCI)2, DMSO (cold); 2. Et3N 5. all of the above would work