Activity 2. Self-ionization of water and pH, pOH, pKw»1. Write the law of mass action for the reaction of self-ionization of water and calculate the concentrationsof [H;O*] and [OH].H,0(1) + H20(1)= H30*(aq) + OH-(aq)Kw = 1.0x10-14%3D2 Since working with yery small powers of 10 can be inconvenient, we commonly use the mathematical

Answered: Image /qna-images/answer/e47021ee-4a48-409f-ae1f-30c9fccc3690.jpg

Answered: = H30*(aq) + OH¯(aq) Kw = 1.0x10-14 %3D…

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Chemistry

= H30*(aq) + OH¯(aq) Kw = 1.0x10-14 %3D nowers of 10 can be inconvenient, we commonly use the r

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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s_engine.html?ClassID=2134898241# An original reaction and enthalpy is given below. 2CH4(g) + 302(g) → 2C0(g) + 4H2O(g) AH = -1168 kJ %3D What is the enthalpy for the altered reaction below? CO(g) + 2H2O(g) → CH¼(g) + O2(g) AH = [ ? ] kJ %3D Enter either a + or - sign AND the magnitude. Enter
ellus_engine.html?ClassID=527350766# 0.50 g of Mg reacts with excess oxygen in a bomb calorimeter with a heat capacity of 3290 J/°C. The initial temperature is 21.5 °C and the final temperature is 25.2 °C. What is the enthalpy of the reaction? AH = [ ? ] kJ/mol Enter either a + or - sign AND the magnitude. Do not round until the end. Use significant figures. AH, rxn (kJ/mol) Enter
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6.92 then b If pKw Kw
M Inbox (2.373)- ftantill@ude X с ← app.101edu.co 56°F Rain off and on 22F-CHEM103-510: General x Aktiv Chemistry G can you divide in hess law- X ‒‒ O Search Question 13 of 41 Using the equations 2 Fe (s) + 3 Cl₂ (g) → 2 FeCl3 (s) AH° = -800.0 kJ/mol Si(s) + 2 Cl₂ (g) → SiCl (s) AH° = -640.1 kJ/mol Determine the molar enthalpy (in kJ/mol) for the reaction 3 SiCl (s) + 4 Fe (s)→ 4 FeCl (s) + 3 Si (s) CHEM103- Lecture Notes - X Enthalpy of Formation Rear X 1 2 4 7 +/- 5 8 . + kJ/mol 3 6 9 0 E G 0 P&D O Update Submit C x 100 + X 7:21 PM 12/6/2022
For items 1-4, consider the isothermal expansion of a 1.5 mole of monoatomic gas gas from a pressure of 1 atm to 0.45 atm at 333 K. 1.) What is the work done for the process? A.) -3.32 kJ В.) + 3.32 kJ C.) -2.28 kJ D.) +2.28 kJ E.) 0 kJ 2.) What is the heat transferred for the process? A.) -3.32 kJ В.) +3.32 kJ C.) -2.28 kJ D.) +2.28 kJ E.) 0 kJ 3.) What is the change in internal energy for the process? А.) +7.61 k) B.) -7.61 kJ C.) +12.6 kJ D.) -12.6 kJ E.) 0 kJ 4.) What is the change in enthalpy for the process? А.) +12.6 k] В.) -12.6 k] C.) +17.8 kJ ' D.) -17.8 kJ E.) 0 kJ
The value of AE for a system that performs 139 kJ of work on its surroundings and gains 54 kJ of heat is kJ. A) 193 85 C) -193 D) 7506 E) -85
3 Ba (s) + 2 Al³ (aq) ----> 3 Ba*2(aq) 2 Al (s) Al +3 + 3 e Al (s) E° -1.66 V @ 25°C Ba 2(aq) + 2e-- Ba (s) E° -2.90 V @ 25°C F-96, 485 C / mol e¨ R 8.314J/mol * K What is the value of AG° for the above reaction? O-205 kJ O-137 kJ O-718 kJ O+205 Kj O+718 kJ
From this given value of Kc: 2H2S (g) <-------> 2H2 + S2 Kc=2.3 X 10-4 at 1404K What is Kc for: H2 + 1/2S2 <--------> H2S
The equation for the combustion of CH4 (the main component of natural gas) is shown below. Part A How much heat is produced by the complete combustion of 280 g of CH4 ? CH4 (9) + 2 O₂ (g) → CO2 (g) + 2H₂O(g) AH = -802.3kJ || ΑΣΦ |Q| = Submit Request Answer < Return to Assignment Provide Feedback P Pearson ? kJ Copyright © 2023 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions |
Esc M (no subject) - ftantill X ← → C < STARTING AMOUNT 78°F Rain coming 0 app.101edu.co X o Mail- Francesca A Tar X F1 4x F2 4 # F3 Recording of the Unit x Charlene Kemmerle's XI banner.dtcc.edu X Question 7 of 21 What is the change in enthalpy in kilojoules when 3.24 g of CH,OH gas is completely reacted according to the following reaction? 2 CH.OH(g) 2 CH-(g) + O:(g) AH = 252.8 kJ ANDWER ADD FACTOR *( ) 7.80 x 10 6.022 x 10² 2 0.101 3.24 252.8 4.00 x 10 12.8 mol O₂ J mol CH-OH mol CH. g CH₂OH g CH g 0₂ OLD 0 ✓ F4 DII ES F5 % 32.00 ^ Aktiv Chemistry X F6 1000 * F7 & 0.001 PrtScn * 32.05 RESET 2 25.6 N Home 1 KJ F9 16.05 hulu University of Delawar X End F10 PgUp PF11 + 12 ☆ A PgDn F12 - D 0 0 + 2:38 PM 6/22/2022 X Submit Del Ins Backspace