CHEM 1210 Study Guide - Final Guide: Joule, Allotropes Of Oxygen, Sodium Hydroxide

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turquoisegnu128

28 Sep 2018

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Ohio State University

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Chemistry

Course

CHEM 1210

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All

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CHEM 1210 Full Course Notes

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The standard enthalpy of formation of atomic oxygen is: Zero, since oxygen is an element and positive, since breaking of. E: given the following standard enthalpies of formation: H = -124. 1 kj/mol only i i, ii & iii ii & iv only ii only iv i & ii iii & iv ii, iii & iv i & iv all are correct. 3: given the following equations and h values, determine the heat of reaction (kj) at 298 k for the reaction: 5. 29 10-18 j nm? n = 3 to n = 1 n = 1 to n =3 n = 4 to n = 2 n = 2 to n = 4 n = 5 to n = 7. E. each element on the periodic table: lithium"s first and second ionization energies are 519 kj/mol and 7300 kj/mol, respectively. Fluorine to largest: mg2+ < na+ < f-

Related Questions

The decomposition of hydrogen peroxide is exothermic because...

Select one:

a. breaking the unstable O-O bond in hydrogen peroxide releases energy.

b. energy is released through the formation of new chemical bonds.

c. the products oxygen and water have a higher enthalpy of formation than hydrogen peroxide.

d. the catalyst iron (III) chloride changes the reaction pathway so that more energy is produced.

e. a gaseous product (oxygen) is able to give more heat energy to the surrounding.

Please help for questions 2,5,6,7,9 &10

D. 1. Silver chloride is not soluble in water. What are the relative strengths of the intermolecular forces between Ag and Ciions and water molecules as compared to the intermolecular forces between water molecules and the forces that hold the silver chloride as a solid? a. The ionic attractions are stronger than the polar covalent bonds between the H' and O ions of the b. The ionic attractions are weaker than the intermolecular forces between the Ag' and Cr ions and water c. The ionic attractions are stronger than the intermolecular forces between the Ag' and Cr ions and water d. The ionic attractions are the same as the intermolecular forces between the Ag and CI ions and water water molecules. molecules. molecules molecules 2. The value of AHsotn for a water soluble compound is +34 kJ moÄ¾1. Which value for this compound would be numerically larger, its lattice energy or its hydration energy? Select the single best answer. step. b. The lattice energy, because it is the endothermic step c. The hydration energy, because it is the exothermic step. d. The lattice energy, because it is the exothermic step. 3, which of the following are reasons why the value of ì¨,on for a gas such as CO2, dissolving in water, is negative? a. When a gas dissolves in a liquid, there is no endothermic step as with the lattice energy of a solid. b. When a gas dissolves in a liquid, there is only an exothermic step as with the lattice energy of a solid. c. The only enthalpy change is the one associated with hydration, and this is always positive. d. The only enthalpy change is the one associated with hydration, and this is always negative. e. When a gas dissolves in a liquid the lattice energy is always higher than the hydration energy, making the net enthalpy always negative. 4. Why is ammonia so much more soluble in water than is nitrogen? a. The triple bond in nitrogen prevents it from dissolving in water. b. Nitrogen has only London forces, while both water and ammonia form hydrogen bonds. c. The molar mass of nitrogen is much larger than the molar mass of ammonia, which reduces its solubility. d. Diatomic molecules are never soluble in water s which agueous solution, if either, is likely to have the highÏr boiling point 50 m Nal or en-Na e au

CHEM 1210 Study Guide - Final Guide: Joule, Allotropes Of Oxygen, Sodium Hydroxide

CHEM 1210 Full Course Notes

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