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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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
Transcribed Image Text:If the ionization constant for water (K) is 2.9x 10-14 at 40°C and 9.3x10-14 at 60° C, the self-
W
ionization is considered to be endothermic
A True
B False

Transcribed Image Text:Selected option: Q>Kc
That's right! This means that initially there is more product and less reactant in the mix as
when in equilibrium.
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- What’s the pH of a solution of ammonia that has a concentration of 0.335 M? The Kb of ammonia is 1.8 × 10–5. First complete the ICE chart.arrow_forwardCaffeine, C8H10N4O2 is a weak base. What is the value of Kb for caffeine if a solution at equilibrium has [C8H10N4O2] = 0.050 M, [C8H10N4O2 H+] = 5.0 × 10−3 M, and [OH−] = 2.5 × 10−3 M?arrow_forward[H3O*) [OH] [H;O*) 1 x 10-14 2.3x10-2M %3D 4.3 x 10-13M [H3O*] Part C Calculate (H3O+] in the following aqueous solution at 25 °C: [OH-] = 6.9×10-12 M . Express your answer using two significant figures. ? Πνα ΑΣφ M H3O*] = Submit Request Answer Part D Classify the solutions as acidic or basic. Drag the appropriate items to their respective bins. P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Pe MacBook Air 888 DII DD F9 %23 %24 2 3 5 8 W E R Y F H J C Varrow_forward
- In a 0.072 M solution of chlorous acid, what percentage of the acid is ionized to the chlorous anion, CIO2 ? K, = 1.1 x 10 2 O 32.2% O 2.32% 0.322% 7.20%arrow_forwardDetermine the concentrations of the following ionic species present in a 0.320 M solution of Na2SO3. For H2SO3, Ka1= 1.4E-2, Ka2 = 6.3E-8. What is the HSO3- ion concentration? What is the SO32- ion concentration?arrow_forwardPhthalic acid (H 2 C 8 H 4 O 4 , abbreviated H 2 Ph ) is a diproticacid. Its ionization in water at 25°C takes place in twosteps: H 2 Ph ( a q ) + H 20 (1)2H 30+ ( a q ) + HPh – ( a q) Ка1-1.26 х 10- 3Н2 Ph - (аq)+H20(1) нзо+(аq) + Ph 2 - (aq) If 0.0100 mol of phthalic acid is dissolved per liter ofwater, calculate the equilibriumconcentrations of H 2 Ph , H P h-, Ph Ка 2-3.10х 10 - 6 2 -, and H 30 +.arrow_forward
- Choose the correct answer from among the alternatives; To make the sentence true: hydrocyanic acid HCN, the ionization constant Kaq = A) [Ka = [H3O +] / [H2O] [HCN B) [Ka = [H3O +] [CN-] / [HCN C)[Ka = [CN-] / [H2O] [HCN D) [Ka = [CN-] / [H2Oarrow_forwardBenzoic acid has a Ka - 6.3 × 10-5. What is the percent ionized in a 0.13 M solution of benzoic acid?arrow_forwardEach row of the table below describes an aqueous solution at about 25 °C. Complete the table. That is, fill in any missing entries in third column. Be sure each entry you write includes the correct number of significant digits. [1,0'] solution pH x10 - 5 mol/L A 8.5 x 10 -11 5.2 х 10 mol/L В - 7 7.3 х 10 mol/L Carrow_forward
- Which 0.10 M solution would you expect to have the largest [H+]? Multiple Choice HF (Ka = 6.8 x 10-4) HC2H3O2 (Ka = 1.8 x 10-5) HC3H5O2 (Ka = 1.3 x 10-4) HCN (Ka = 4.9 x 10-10) HCOOH (Ka = 1.8 x 10-4)arrow_forwardList the following by ability to ionize, least to greatest. HC7H5O2, Ka = 6.3x10-5 HC2H3O2, Ka = 1.8x10-5 HClO, Ka = 3.5x10-8 H3BO3, Ka = 7.3x10-10 H2S, Ka = 1.0x10-7arrow_forwardDetermine the concentrations of the following ionic species present in a 0.328 M solution of the diprotic acid H2SO3. For H2SO3, Ka1 = 1.4E-2, K32 = 6.3E-8. What is the H30* ion concentration? i M eTextbook and Media What is the HSO3 ion concentration? i What is the SO3²- ion concentration? i Marrow_forward
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