QUESTION 3: Write the following half reaction per 1 electron. 1) Cr(III) to Cr(II) 2) Zero valent Fe to Fe2+ 3) Nitrate NO; to N2 4) CC14 to CHC1; 5) CHCI; to CH;Cl,
Q: The van der Waals equation of state was designed (by Dutch physicist Johannes van der Waals) to…
A:
Q: In trichlorofluoromethane refrigerant (CCl3F, also known as Freon-11, R-11, or CFC-11), there are 3…
A: Given: C-Cl bond energy = 331 kJ/mol Wavelength of Ultra violet region is between 100 nm to nm.
Q: Calculate the pH at 25 °C of a 0.53M solution of pyridinium chloride (C5H,NHC1). Note that pyridine…
A:
Q: ertain zinc-copper cell, + Cu²^(aq) → Zn²“(aq) + Cu(s) n concentrations are (Cu2*] = 0.0346 M an is…
A: From the cell potential data E°zn = -0.76 V E°Cu = 0.34 V E°cell = E°c - E°a = 0.34 - (-076) =…
Q: 3.5 x 10-8) What is the pH at the equivalence point in the titration of 100.0 mL of 0.0500 M HOCI…
A:
Q: The reaction: 2NO + Cl2 → 2NOCl is second order in NO, first order in Cl2 and third order overall.…
A:
Q: AICI,
A:
Q: Calculate the pH at 25°C of a 0.0047 M solution of a weak base with a K, of 3.5 x 10-9. pH = %3D
A: Answer: Given data: Kb=3.5×10-9C=0.0047M
Q: HC Hz CH3O2 t cacoHb caq) H Lio H ca4)
A:
Q: The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure…
A: Given table is : Calculate the enthalpy of vaporization = ΔHvap. = ?
Q: Naming Alkanes CH-CH-CH-CH 2. CH-CH-CH-CH-CH-CH 1. 4. 3.
A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…
Q: कि व १arvreाiक, ग्प्ला ०7 गप्डाrमेका. No is oxidized to Noã and Fe3t id sceduced to Fezt. complete…
A:
Q: At 45°C, the vapor in equilibrium with a solution of ethanol (eth) and chloroform (chl) has a…
A: We have find out the partial pressures in the vapor phase. b. Calculate pure chloroform's vapor…
Q: Given the thermochemical equations: 2NaN3 → 2Na + 3N2 ∆H = +42.7 kJ How many grams of…
A:
Q: Is isoamyl alcohol soluble in 5% NaOH, 5% NaHCO3 and 5% HCl? If yes/no, what is the reason
A: No
Q: se the statements that are correct. ect all that apply.) Copper metal can be oxidized by Ag+. In a…
A: 1) copper metal can be oxidised by Ag+
Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…
A: The reaction will be as: CS2(g) + 3O2(g) ----> 2SO2(g) + CO2(g)
Q: Determine the pH change when 0.070 mol HCIO, is added to 1.00 L of a buffer solution that is 0.395 M…
A:
Q: The reaction C2H5Cl →C2H4 + HCl is first order in C2H5Cl. The rate constant is 1.60 x 10-6/s. In an…
A:
Q: need help to draw a 4-Nitrobenzyl Alcohol ir spec digram and also for it need to draw…
A:
Q: What do you call the sum of the exponents of the concentration terms in the rate equations for a…
A:
Q: The reaction: 2NO + Cl2 → 2NOCl is second order in NO, first order in Cl2 and third order overall.…
A:
Q: A sample of an unknown compound is vaporized at 150. °C. The gas produced has a volume of 980. mL at…
A:
Q: Which of the following is a technical challenge to using lithium metal as the anode in lithium…
A: The question can be answered based on the reduction potential of lithium which is the key species of…
Q: Be sure to answer all parts. Calculate the pH for each of the following solutions at 25°C. (a) 0.15…
A: Here we are required to find the pH of the two weak bases
Q: The reaction C2H5Cl →C2H4 + HCl is first order in C2H5Cl. The rate constant is 1.60 x 10-6/s. In an…
A:
Q: CN H,O* BrMg 3 H-CO-N(CH3)2 (TM) H-CO,H Cl (Leuckart Reaction) Scheme-1
A: The mechanism of the following is as follows:
Q: I Review | Constants | Periodic Table raILr Normal metabolic processes produce significant amounts…
A:
Q: I Penodic Table 100. mL of 0.200 M HCI is titrated with 0.250 M NaOH. Part A What is the pH of the…
A: pH :- The negative logarithm to the base 10 of hydrogen ion concentration expressed in mol/L of a…
Q: The atmospheric pressure on the surface of Venus is 6.84 × 10' mmHg. Calculate the atmospheric…
A:
Q: Does a reaction occur when aqueous solutions of nickel(II) acetate and magnesium iodide are…
A: A reaction occur between two solutions if any solid compound form when they react. So, we would use…
Q: How many grams of water vapor would be required to occupy a 517 mL flask at 0.980 atm and 89.6…
A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related by the ideal…
Q: 2. The following data was obtained from the reaction: NH4 + (aq) + NO2 (aq) → N2(g) + 2H2O(1)…
A: From the given data we have to find the rate law, the rate constant and the initial rate of the…
Q: Calculate the sodium ion (Na+) concentration for a 0.288 M Na3PO4 solution.
A:
Q: Choose all of the processes from below which describe changes which are independent of the path by…
A: A multiple choice question based on chemical thermodynamics that is to be accomplished.
Q: What do you call the sum of the exponents of the concentration terms in the rate equations for a…
A: sum of the exponents of the concentration terms in the rate equations for a reaction is called order…
Q: is the study of rate and mechanisms of chemical reactions is called? Select one: a. Kinetics b.…
A:
Q: 19. Refer to the molecule below. (1) Draw the newman projection for carbon #1 and #2. Let the carbon…
A:
Q: When excited by photons, the electric potential of p700 in photosystem 1 goes from +0.4 V to -1.3 V.…
A:
Q: Incorrect Mechanism (The mechanism is for the formation of the 1,4 product. Please ignore the 1,2…
A:
Q: How many grams of MgCl2 in 30.00 mL of a 25.5 ppt solution ? (30.00 mL)(- %3D mL а. 25.5 i. 18.0 b.…
A: All the necessary calculations have been done in the following step.
Q: Gas A has a molar mass 21.8, while gas B has a molar mass 78. How much faster will A effuse? (record…
A: The process of escaping the gas molecule through a very small hole is known as effusion. During…
Q: For the given reaction, the rate constant,k is 2 x 10-5 at 650K and the energy of activation is Ea…
A: According to the Arrhenius equation ln(k2/k1)= Ea/R[(T2 –T1)/T1T2] Where k2 is rate constant at T2…
Q: A rock contains the radioactive isotope K − 40 that decays with a half-life of 1.3 billion years and…
A: Answer: Nuclear reactions are first order reactions, therefore integrated rate law of first order…
Q: Hydrazine, N2H4 is used as rocket fuels. The thermochemical equations for the combustion of…
A: Given reaction, N2H4 + O2→ N2 + 2H2O ∆H = -622.4 KJ 1 mole of combustion of N2H4 produces -622.4…
Q: Draw the structure that formed between alpha-L-Erythrose with the amino acid Asparagine and label…
A:
Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into…
A: It is given that 214 kJ of heat flows out of the system, thus the reaction is exothermic. As heat…
Q: explnation of the mechanism step by step
A: Before proceed to mechanism one must know about the reduction. Now, What is reduction? Reduction…
Q: The thermal decomposition of phosphine into phosphorus and molecular hydrogen is a first order…
A:
Q: Lithium, is used in dry cells and storage batteries and in high temperatures lubricants, it has two…
A: Given- M1=6.01521 M2=7.016003 A1 (%)=7.50 A2(%)=92.50
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- The Kf (complex formation constant) of [Ag(en)₂*] > is 5.0x107. The standard reduction potential Eº Ag+/Ag is +0.800 V. • What is the Eº Ag(en)2*/Ag--the standard reduction potential of the silver complex to Agº at 298.15 K? • Use F= 96485 units, R= 8.3145 J/mol K. • Write answer in 2 (Two) significant figures. example if answer is -0.22334 V then you should write -0.221. A sample of iron ore weighing 0.6428 g is dissolved in acid The iron is reduced to Fe*2 and titrated with 36.30 mL of a 0.1052 N solution of K2Cr207. (a) Calculate the percentage of iron (Fe) in the sample. (b) Express the percentage as Fe,03 rather than Fe. Hint: The reaction of Fe2+ with Cr,0,2 involves one electron to oxidize it to Fe*.1. A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe2+, and the solution was titrated with 36.40 mL of 0.02065 M KMnO4 in acid solution. (a) Write the titration reaction. (b) Calculate the %FeO (M.M. = 71.85) in the sample. 2. A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153 g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86 mL of the Na2S2O3 for titration. (a) Write the titration reaction. (b) Calculate the molarity of the titrant solution.
- 1. A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe2+, and the solution was titrated with 36.40 mL of 0.02065 M KMnO4 in acid solution. (a) Write the titration reaction. (b) Calculate the %FeO (M.M. = 71.85) in the sample. 2. A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153 g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86 mL of the Na2S2O3 for titration. (a) Write the titration reaction. (b) Calculate the molarity of the titrant solution. Box the final answer.For (a.) Al3+|Al, (b.) Cu2+|Cu, (c.) Li+|Li, (d.) Cd2+|Cd, (e.) Au3+|Au Given redox couples, determine the temperature at which the redox couples are in equilibrium considering under standard conditions: 25 °C 1 M concentration for each ion participating in the reaction The partial pressure of 1 atm for each gas that is part of the reactionCalculate the concentration of [Ag(S2O3)2]3- in a solution which contains 8.5E-6 M Ag+ ions and twice that molar concentration of thiosulfate ions at equilibrium? The Kf for [Ag(S2O3)2]3- is 4.7 x 1013. Your answer should have 2 sig figs.
- Compensate for the following redox reactions using the half reaction method? In Acidic Solution; (Fe(CN)6)3- + N2H4 ---> (Fe(CN)6)4- + N2 In Basic Solution; CrO42- + S2O42- ---> Cr(OH)3 + SO32-E° = -1.48V ↑ 3. For the reduction of Cr(OH)3 by H₂ in basic solution to give Cr and H₂O, write the balanced net equation and calculate AGº.Cerium(IV) is a strong oxidizing agent commonly used in redox titrations. Which of the following statemnt is/are NOT true for cerium(IV)? I.A Ce** standard solution is prepared using primary-standard-grade ammonium hexanitratocerate(IV), (NH4)2Ce(NO3); dissolved in hot hydrochloric acid solution. II. Ce** is yellow and Ce3* is colorless. The color change is abrupt enough that Ce** can serve as its own indicator. III. Ce**/Ce* exists in different formal potential in different acids due to the interaction of the anions part of the acid with Ce** IV. Analysis of many organic analyte such as alcohol, aldehydes can be determined using Ce**by an indirect method involving a technique of back titration of unreacted excess Ce*with standard iron Il titrant O a. 1,11,IV O b. 1, II, III O. I,II O d. II, II, IV O e. I, II, III, IV
- What is the pH of a 0.05 M solution of CdSO4 if the KA value for [Cd(H2O)n] 2+ is 3x10-9 ? b. Write dissociation constant expression and predict pH (less or greater than 7) for Na2CO3 and CuCl2.Describe giving reason which one of the following pairs has the property indicated : (a) Cr2+ or Fe2+ (stronger reducing agent). (b) Co2+ or Ni2+ (lower magnetic moments).3. Metal ion complexation is known to affect the half-wave potential for the reduction of a metal ion. M+ + Hg+ne → M(Hg) MxAMAX (n-x)+ [1] [2] The relationship between the molar concentrations of the ligand CL and the shift in the half-wave potential is: = (E) E (-0.0592/n)logK - (0.0592x/n)logcL [3] Where (E) and E½ are half-wave potentials for the complexed and uncomplexed cation, respectively, K, is the formation constant for the complex, and x is the molar combining ratio of the complexing agent to cation. The following polarographic data were obtained for the reduction of Pb2+ to its amalgam from solutions that were 2.00 x 10-3 M in Pb2+, 0.100 M in KNO3, and different concentrations of the anion A. From the half-wave potentials, find (i) the formula of the complex, and (ii) its formation constant Kſ. Concentration A, M 0.0000 E vs. SCE, V -0.405 0.0200 -0.473 0.0600 -0.507 0.1007 -0.516 0.3000 -0.547 0.5000 -0.558