42)
Firstly, we need to balance the reaction such that the coefficient of H2O2 is 1. Note that the original reaction is unbalanced.
Thus, we will have,
For any reaction, the formula for free energy change of the reaction is,
Here, The products are 1/2O2 and H2O and the reactant is H2O2
Thus, putting in the value of free energy of these in the above reaction, we have,
Thus, the answer will be (C) -110 kJ
43)
We have two half reactions
We first, reverse the second reaction,
Note that the sign of Eo will become negative. Then we multiple the reaction (1) with 2 and the reversed reaction (3) with 5 and add both of them to get the full reaction given
The Eo will be simply the sum of Eo of the two reactions (1) and reaction (3)
Eo = +1.51 V + (-1.77 V) = -0.26 V
please explain with details sen peroxide is a colorless liquid at room temperature. It is soluble...
Hydrogen peroxide, H2O2, is a colorless liquid whose solutions are used as a bleach and an antiseptic. H2O2 can be prepared in a process whose overall change is H, O2 (1) H2(g) +O2(g) Calculate the enthalpy change using the following data: 2H2O2()2H2 O (l) + O2(g); AH = -196.0 kJ H2(g) +O2(g)H2O(); AH= -285.8 kJ ΔΗ- kJ 10 item attempts remaining Try Another Version Submit Answer
Delete CHE 120 Pb.9.Liquid hydrogen peroxide, an oxidizing agent used in many rocket fuel mixtures, releases oxygen gas on decomposition: AHon=-196.1 kJ -2H2O(I)O2(g) 2H2O2(l) What mass of H2O2 decomposes if 2510 kJ is released?
72. Hydrogen peroxide is a very common oxidizing agent. It has been used as an oxidizer for rocket engines, it is a readily available antiseptic for home use and we have used it several times in the general chemistry lab. Below is some thermodynamic data for hydrogen peroxide xide at 25 C H (kJ/mol AG (k.J/mol Chemical Thermodvnamics of hydrogen 188 266 H20:1) H2(g) 02(g) H:0:(1) 20H(g H2O2(g) → 20H(g) H202(g) HO:(g) +H(g) H2O2(l) H2O(l)+%O2(g) 120 188 174 332 365...
Exam Hydrogen peroxide, H202, is a colorless liquid whose solutions are used as bleach and an antiseptic. H2O2 can be prepared in a process whose overall change is H2(g) + O2(g) -H02(1 Calculate the enthalpy change using the following data: H2O2(1) - H20(1) +502 (8); AH = -98.0 kJ (1) 2H2(g) + O2(g) → 2H20(1): AH = -571.6 kJ (2) 5. What is the wavelength, in nanometer, of light emitted when the electron in a hydrogen atom undergoes a transition...
Please show work I am not getting the correct answers 1. Hydrogen peroxide, H2O2, decomposes spontaneously through the following reaction. 2H2O2(aq) 2H2O(g) + O2(g) The kinetics are second order, and the half‐life is 17.3 min when a 1.75 M solution of H2O2 is made. What is the concentration of the solution after 24.8 min? 2. The decomposition of N2O5 occurs by the following reaction: 2N2O5(g) 4NO2(g) + O2(g) The rate constant is experimentally determined to be 3.4 x 10‐4 s‐1....
Liquid hydrogen peroxide is an oxidizing agent in many rocket fuel mixtures because it releases oxygen gas on decomposition as shown below. 2 H202 (1) ► 2 H20,() + O2 (g) AHrxn = -196 kJ How much heat istreleased when 25.0 grams of H202 decomposes? Molar Mass(H2O2) = 34.01 g/mol Ca.-133 kJ b.-533 k] c-72.0 kj 0-288 kJ e-144 kJ
Can anyone show me the correct answer? Be sure to answer all parts. Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition: 2 H202(1) >2 H,0(l) + 02(g) How much heat is released when 470. kg of H20, decomposes? 1.36 x 10kJ (Enter your answer in scientific notation.) You are out of attempts for this question.
Hydrogen peroxide (H2O2) is a possible product of the reduction of oxygen in acidic solution: 02(g)+2H+(aq) + 2 e-→ H2O2(,) H2O2(,) + 2 H+(aq) + 2 e-→ 2 H2O(aq) 02(g)+ 4 H+(aq)+4 e-→ 2 H20(,) E3 =0.70 V It can then be further reduced to water E2。 = 1.78 V The direct reduction of O2 to water has the following half-cell potential: E1 = 1.23 V (a) Compute ΔE° for the disproportionation of H2O2 in acidic solution. (b) Is H202...
Pb.8. Consider the following balanced thermochenmical equation for the decomposition of the mineral magnesite: MgCOs(s) MgO(s)+CO2(g) AHn 117.3 kJ a) Is heat absorbed or released in the reaction? b) What is AHnn for the reverse reaction? c) What is AH when 5.35 mol of CO2 reacts with excess MgO? d) What is AH when 35.5 g of CO2 reacts with excess MgO? Page 3 of 4 CHE 120 Pb.9. Liquid hydrogen peroxide, an oxidizing agent used in many rocket fuel...
Estimate AHrxn for the below chemical reaction using the provided bond enthalpies. The Lewis structures hydrogen peroxide (H2O2) is shown below. 2 H2O2 (g) → 2 H20 (g) + O2 (g) Bond Bond Enthalpy (kJ/mol) 0-0 O=0 495 H-O 463 Η-Η 436 146 : 0:1