When a sample of NO 2 is placed in a container this equilibrium is rapidly

When a sample of no 2 is placed in a container this

This preview shows page 9 - 13 out of 16 pages.

32. When a sample of NO2is placed in a container, this equilibrium is rapidly established. 2 NO2(g) <===> N2O4(g) If this equilibrium mixture is a darker color at high temperatures and at low pressures, which of these statements about the reaction is true? (A) The reaction is exothermic and NO2is darker in color than N2O4. (B) The reaction is exothermic and N2O4is darker in color than NO2(C) The reaction is endothermic and NO2is darker in color than N2O4. (D) The reaction is endothermic and N2O4is darker in color than NO2. 33. When the acids; H2Se, HBr, and HI, are arranged in order of increasing strength (weakest
Background image
acid first), which is the correct order? 34. Which statement is true about the relationship between Brønsted-Lowry (B-L) bases and Lewis bases? 35. A solution of 2.0 M formic acid (HCOOH) is 0.95% ionized. What is the Kaof formic acid? 36. If 0.1 mol of a salt is added to 1.0 L of water, which of these salts is expected to produce the most acidic solution? (A) NaC2H3O2(B) NH4NO3(C) CuSO4(D) AlCl337. The pKavalues for several acid-base indicators are given in the table. Which indicator should be used in the titration of a weak base with a strong acid? Indicator, pKa
Background image
38. Which graph best represents the electrical conductivity behavior that occurs when an aqueous solution of acetic acid, HC2H3O2, is titrated with an aqueous solution of sodium hydroxide, NaOH? 39. When this oxidation-reduction equation is correctly balanced, what is the mole ratio of reducing agent to oxidizing agent? (A) 1:1 (B) 2:1 (C) 4:1 (D) 5:2 40. The solubility of solid silver chromate, Ag2CrO4, is determined in three solvents. Solubility Product, KspAg2CrO49 x 10¯12I. pure water II. 0.1 M AgNO3III. 0.1 M Na2CrO4
Background image
Predict the relative solubility of Ag2CrO4in the three solvents. 41. Which combination of reactants will produce the greatest voltage based on these standard electrode potentials? Standard Reduction Potentials Cu+(aq) + e¯ ---> Cu(s) + 0.52 V Sn4+(aq) + 2e¯ ---> Sn2+(aq) + 0.15 V Cr3+(aq) + e¯ ---> Cr2+(aq) - 0.41 V
Background image
Image of page 13

You've reached the end of your free preview.

Want to read all 16 pages?

  • Spring '08
  • rogers
  • Oxidation Number, Carboxylic acid, National Chemistry Olympiad

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes