HowManysignalsdo you expect in HNMRA) 2B) 3c)4D) 5

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Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 38P

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5
7. (a) Predict whether, KCN, potassium cyanide will form an acid, base or neutral solution. (b) Calculate the pH of a 0.500 M solution of KCN. K, for HCN is 5.8 x 10-". 14 INQ
Why is (CH3)3Cl considered to be a Lewis Acid?
14.(3pts) Among the following, determine which have similar chemical properties:Na, Mg, K, K+. Briefly explain
What is the basis for referring to the hydrogen ion as a proton? (a) The Arrhenius definition of an acid. (b) The Brønsted-Lowry definition of an acid x (c) The Lewis definition of an acid. (d) H* exists as a bare proton. (e) None of these.
In a solution of 0.015 mol L-1 HBr(aq) at 25 °C (a) What are the concentrations of the hydronium, H3O+, and hydroxide, OH-, ions? (Recall that HBr is a strong acid which means it completely ionizes in water ) (b) What is the pH of the solution?
Chlorine dioxide gas (ClO2) is used as a commercial bleachingagent. It bleaches materials by oxidizing them. In thecourse of these reactions, the ClO2 is itself reduced. (a)What is the Lewis structure for ClO2? (b) Why do you thinkthat ClO2 is reduced so readily? (c) When a ClO2 moleculegains an electron, the chlorite ion, ClO2-, forms. Draw theLewis structure for ClO2-. (d) Predict the O—Cl—O bondangle in the ClO2- ion. (e) One method of preparing ClO2is by the reaction of chlorine and sodium chlorite:Cl2(g) + 2 NaClO2(s)------>2 ClO2(g) + 2 NaCl(s)If you allow 15.0 g of NaClO2 to react with 2.00 L of chlorinegas at a pressure of 1.50 atm at 21 °C, how many gramsof ClO2 can be prepared?
Use VSEPR theory to predict the shape of the phosphorus pentachloride (PCl5) molecule. (a) tetrahedral (b) trigonal bipyramidal (c) linear (d) bent
What is the degree of ionization (i) for H₂SO₄(aq)?
14.58 Complete and balance the following oxidation-reduction reactions, assuming they occur in acidic solution. (a) C20; (aq)+MnO,(aq)' CO(g)+Mn²*(aq) (b) CIO3(aq)+CI¯(aq) Cl2(aq) (c) S20;(aq)+I½(a) so; (ag)+I¬(aq)
For the following reactions at constant pressure, predict if HE,HE,orH=E a. 2HF(g)H2(g)+F2(g) b. N2(g)+3H2(g)2NH3(g) c. 4NH3(g)+5O2(g)4NO(g)+6H2O(g)
1. As the number of oxygen atoms increases in any series of oxygen acids, such as HXO, HXO2, HXO3, which of the following is generally true? (A) The acid strength varies unpredictably. (B) The acid strength decreases only if X is a nonmetal. (C) The acid strength decreases only if X is a metal. (D) The acid strength decreases whether X is a nonmetal or a metal. (E) The acid strength increases.

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How Many signals do you expect in HNMR A) 2 B) 3 c)4 D) 5