A current of 10.6 A is applied to 1.25 L of a solution of 0.548 molL−1...
A current of 10.6 A is applied to 1.25 L of a solution of 0.548 molL−1 aqueous HBr converting some of the H+(aq) to H2(g), which bubbles out of solution. What is the pH of the solution after 75 minutes? (Assume the volume of solution to be constant.)
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A current of 10.6 A is applied to 1.25 L of a solution of 0.548
molL−1...
If an aqueous solution of HNO3 is electrolyzed for 15.00 min at a steady current of 1.39 A, what volume of H2 (g) at 25...
If an aqueous solution of HNO3 is electrolyzed for 15.00 min at a steady current of 1.39 A, what volume of H2 (g) at 25.0°C and 1.05 atm will be collected at the cathode? vol H2 (L) = 18.8 The reaction is: 2 H+ (aq) + 2e → H2 (g) Submit Answer Incorrect. Tries 4/45 Previous Tries
How many grams of chromium metal will be deposited from a solution that contains Cr^3+ ions...
How many grams of chromium metal will be deposited from a solution that contains Cr^3+ ions if a current of 1.01 A is applied for 40.2 minutes. Answer in______________ grams? How many grams of cobalt metal will be deposited from a solution that contains Co^2+ ions if a current of 0.517 A is applied for 40.5 minutes. Answer in_____________ grams? How many grams of cobalt metal will be deposited from a solution that contains Co^2+ ions if a current of...
Question 25 In the electrolysis of water shown below, a current of 2 amps is applied...
Question 25 In the electrolysis of water shown below, a current of 2 amps is applied to 180 mL of H2O(l) for 6 hours and 42 minutes. How many grams of H2(g) are formed? (Faraday's constant = 96,500 C/mol) 2 H2O(l) + 2 e H2(g) + 2 OH(aq) A. 0.25 g O B. 0.5 g О C. 5.0 g O D. 10.0 g
L. Explain why a solution of 0.10 M HNO(ag) conducts more electrical current than does a solution of 0.10 M formic acid, HCOOH. 2. Explain the observed trend in melting points in the hydrogen hal...
L. Explain why a solution of 0.10 M HNO(ag) conducts more electrical current than does a solution of 0.10 M formic acid, HCOOH. 2. Explain the observed trend in melting points in the hydrogen halides. HI HBr 88.5 °C HF 83.1 "C 14.8° Ethanol has a heat of vaporization of 38.56 kJ/msol and a normal boiling point of 78.4°C. what is the vapor 3. pressure ofethanol at 15 ℃ ? 4. One type of household bleach contains 455% sodium hypochlorite(NaOCl)...
Peroxodisulfate ion, S2O82–, decomposes in aqueous solution as follows: 2S2O82–(aq) + 2H2O(l) = 4SO42–(aq) + O2(g)...
Peroxodisulfate ion, S2O82–, decomposes in aqueous solution as follows: 2S2O82–(aq) + 2H2O(l) = 4SO42–(aq) + O2(g) + 4H+(aq) When the solution is buffered at pH = 1.00, the rate obeys the following rate law: Rate = – = k[S2O82–] /delta t = k[ S2O82-] Under this condition, it was found that it took 330 s for the concentration of S2O82- to decrease from 0.100 M to 0.072 M. (a) Calculate the rate constant k and indicate the appropriate unit for...
What is the molar concentration of potassium ions in a 0.300 MK2CO3 solution? 0.150 M 0.600...
What is the molar concentration of potassium ions in a 0.300 MK2CO3 solution? 0.150 M 0.600 M 0.900 M 0.300 M Which compound forms an electrolyte solution when dissolved in water? O C2H5OH C6H12O6 (glucose) O Nal O Cl2 A solution is saturated in H2 gas and LiCl at room temperature. What happens if the solution is warmed to 75 °C? Solid LiCl precipitates out of solution. Solid LiCl precipitates out of solution and gaseous H2 bubbles out of solution....
question 2 and 3 could be answer is a complete question Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following stateme...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
n) A constant current of 6.00 amp is passed through a solution containing NaCl(aq) .for 12.0...
n) A constant current of 6.00 amp is passed through a solution containing NaCl(aq) .for 12.0 2 e minutes. During this time, the CI(aq) is oxidized via 2 CI(Clh+ and the resulting Cl(g) is collected. What is the volume of the Cl2(g), expressed in mL, if its pressure is 0.700 atm. and its temperature is 21.0°C? Assume 100% current efficiency, and assume that the gas is ideal. Data: R 8.3145 J/(K mol) -0.0821 L atm/(K mol), faraday 96,500 coulombs.
Molten salts When electricity is applied to a molten binary salt, the cation will be reduced...
Molten salts When electricity is applied to a molten binary salt, the cation will be reduced and the anion will be oxidized. The electrolysis of CaBrz (), for example, produces Ca(s) at the cathode (from the reduction of Ca2+) and Br2(1) at the anode (from the oxidation of Br"). If more than one cation is present, only the one with highest reduction potential will be reduced. Similarly, if more than one anion is present, only the one with the highest...
I need help with my chemistry homework :) PART 1.) A buffer solution contains 0.35 mol...
I need help with my chemistry homework :) PART 1.) A buffer solution contains 0.35 mol of hydrogen peroxide (HOOH) and 0.50 mol of sodium hydrogen peroxide (NaOOH) in 3.60 L. The Ka of hydrogen peroxide (HOOH) is Ka = 2.4e-12. (a) What is the pH of this buffer? pH = _____ (b) What is the pH of the buffer after the addition of 0.31 mol of NaOH? (assume no volume change) pH = ______ (c) What is the pH...
If an aqueous solution of HNO3 is electrolyzed for 15.00 min at a steady current of 1.39 A, what volume of H2 (g) at 25.0°C and 1.05 atm will be collected at the cathode? vol H2 (L) = 18.8 The reaction is: 2 H+ (aq) + 2e → H2 (g) Submit Answer Incorrect. Tries 4/45 Previous Tries
Question 25 In the electrolysis of water shown below, a current of 2 amps is applied to 180 mL of H2O(l) for 6 hours and 42 minutes. How many grams of H2(g) are formed? (Faraday's constant = 96,500 C/mol) 2 H2O(l) + 2 e H2(g) + 2 OH(aq) A. 0.25 g O B. 0.5 g О C. 5.0 g O D. 10.0 g
L. Explain why a solution of 0.10 M HNO(ag) conducts more electrical current than does a solution of 0.10 M formic acid, HCOOH. 2. Explain the observed trend in melting points in the hydrogen halides. HI HBr 88.5 °C HF 83.1 "C 14.8° Ethanol has a heat of vaporization of 38.56 kJ/msol and a normal boiling point of 78.4°C. what is the vapor 3. pressure ofethanol at 15 ℃ ? 4. One type of household bleach contains 455% sodium hypochlorite(NaOCl)...
What is the molar concentration of potassium ions in a 0.300 MK2CO3 solution? 0.150 M 0.600 M 0.900 M 0.300 M Which compound forms an electrolyte solution when dissolved in water? O C2H5OH C6H12O6 (glucose) O Nal O Cl2 A solution is saturated in H2 gas and LiCl at room temperature. What happens if the solution is warmed to 75 °C? Solid LiCl precipitates out of solution. Solid LiCl precipitates out of solution and gaseous H2 bubbles out of solution....
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
n) A constant current of 6.00 amp is passed through a solution containing NaCl(aq) .for 12.0 2 e minutes. During this time, the CI(aq) is oxidized via 2 CI(Clh+ and the resulting Cl(g) is collected. What is the volume of the Cl2(g), expressed in mL, if its pressure is 0.700 atm. and its temperature is 21.0°C? Assume 100% current efficiency, and assume that the gas is ideal. Data: R 8.3145 J/(K mol) -0.0821 L atm/(K mol), faraday 96,500 coulombs.
Molten salts When electricity is applied to a molten binary salt, the cation will be reduced and the anion will be oxidized. The electrolysis of CaBrz (), for example, produces Ca(s) at the cathode (from the reduction of Ca2+) and Br2(1) at the anode (from the oxidation of Br"). If more than one cation is present, only the one with highest reduction potential will be reduced. Similarly, if more than one anion is present, only the one with the highest...
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