Homework Answers
31)
Given:
Energy of 1 mol = 2.797*10^2 KJ/mol
= 2.797*10^5 J/mol
Find energy of 1 photon first
Energy of 1 photon = energy of 1 mol/Avogadro's number
= 2.797*10^5/(6.022*10^23)
= 4.645*10^-19 J
This is energy of 1 photon
use:
E = h*c/lambda
4.645*10^-19J =(6.626*10^-34 J.s)*(3.0*10^8 m/s)/lambda
lambda = 4.28*10^-7 m
Answer: 4.28*10^-7 m
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P,010(s) + 6PC13(g) → 10POCI;(8) 1. The synthesis of phosphoryl chloride (POCI,) is represented in the...
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please answer all questions if possible. Thank you! Pre-lab Questions of HESS'S LAW . About 2...
please answer all questions if possible. Thank you!
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12. (5 pt) Consider the reaction: PCI PCL + Cl AH = -15.0 kJ and the...
12. (5 pt) Consider the reaction: PCI PCL + Cl AH = -15.0 kJ and the energy of activation of the reaction is 25.0 kJ. Determine the frequency factor for the reaction PCI + Cl2 ---- PCls, with a rate constant of 1.080 L.mol's at 27 °C. 13. (5 pts) Consider the reaction in equilibrium: 3 A (g) + 3 B () --- 6 C(s) + 3 D (8) K = 2.40 at 27 °C. Determine K for the equilibrium...
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32. Given the following data: A. P4(s)+ 6 Cl2(g)4 PCls(g) B. P4(s)+ 5 02(g) P4O10(s)AH=- 2967.3 C. PCls(g)+Cl2(g) PCIS(g) D. PCI3(g)+O2(g) ClaPO(g) AH-285.7 AH 1225.6 kJ AH=-84.2 Calculate AH for the reaction: P4O10(s)+6 PCI5(g) 10 CI3PO(g). Note when I solved this problem, I used 3 of the 4 data reactions, added them together, then used the fourth data reaction to get to the desired reaction. -B-6C+10D+A
Given the heats of the following reactions: AH° kJ 1. P.(s) + 6C,(g) -->4PCI (g) -1225.6 II. P (s) + 50, (g) ---->P,(s) -2967.3 III. PCI, (g) + Cl, (g) ---> PCI (g) -84.2 IV. PCI,(g) + x0,(g)--->CI PO(g) -285.7 Calculate the value of AH® for the reaction below: P.O.(s) + 6PCI_(8) ---> 10C1, PO(g) -110.5 kJ -610.1 kJ -2682.2 kJ (D) -7555.0 kJ (A) (B)
GENERAL CHEMISTRY GROUP STUDY SB The first 3 problems are to be submitted today. #1.(30pts, 15 pts each) (c) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m-mass, g- acceleration due to gravity 9.81 m/s. The specific heat of water- 4.184 J/(g "C). (d) If a system absorbs 30.0 J of heat from...
3(20 pts) Consider the data: P4(s) + 6 Cl2(g) ----> 4 PC13(g) P4(s) + 5 O2(g) -----> P4010(s) PC13(g) + Cl2(g) ---> PCls(g) PC13(g) + 1/2O2(g) ----> C13PO(g) AH° (kJ/mol) -1226.6 -2967.3 -84.2 -285.7 Using only the above reaction data, compute the AHX of P4010(s) + 6 PCls(8) ----> 10 C13PO (g)
P,010(s) + 6PC13(g) → 10POCI;(8) 1. The synthesis of phosphoryl chloride (POCI,) is represented in the reaction above. a. Determine the value of the standard enthalpy change AHⓇxn for the synthesis of POCI(g) at 298K using the following information. (5 points) i. P,(s) +6C12(g) → 4PC12(g) AH° = -1225.6 kJ ii. P.(s) + 502(g) →P,0,.() AH = -2967.3 kJ iii. PCI,(g) + Cl, (g) → PC1,(g) AH = -84.2 kJ iv. PCI,(g) + 1/2 0,(g) → POCI,(g) AH° = -285.7...
please answer all questions if possible. Thank you!
Pre-lab Questions of HESS'S LAW . About 2 grams of solid NaOH is measured to the nearest centigram and added to 100.0 of HO The temperature is monitorod as the NaOHs) dissolves. The density of water and the dilute selutions is 1.00 gmL The specific heat capacity of water, e, is 4.184 JgCThe data table is recoeded. Complete the blank cells in the table Rcaction 1.86 g 100.0gHO1.86 g NaOHs) 28.4C 1....
12. (5 pt) Consider the reaction: PCI PCL + Cl AH = -15.0 kJ and the energy of activation of the reaction is 25.0 kJ. Determine the frequency factor for the reaction PCI + Cl2 ---- PCls, with a rate constant of 1.080 L.mol's at 27 °C. 13. (5 pts) Consider the reaction in equilibrium: 3 A (g) + 3 B () --- 6 C(s) + 3 D (8) K = 2.40 at 27 °C. Determine K for the equilibrium...
0/8 points v Previous Answers OSATOMSCHEM1 9.3.P.042. Calculate AH (in kJ/mol) for the reaction described by the equation. 4 NH3(g) +50269) + 4 NO(g) + 6 H2001 -904.0 x kJ/mol Supporting Materials Periodic Table Supplemental Data Constants and Factors Additional Materials eBook 4. -/24 points v OSATOMSCHEM1 9.3.P.068. Using the Supplemental Data, calculate the standard enthalpy change (in kJ/mol) for each of the following reactions. (a) B203(5) + 3 H2(9) ► 2B(5) + 3 H20(1) kJ/mol (b) B(s) + O2(g)...
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