(A)
Interpretation:
The compound with higher boiling point from MgBr2 or PBr needs to be determined.
Concept Introduction:
To determine the boiling point of any compound, electronegativity difference of the elements of the compound needs to be calculated. As the electronegativity difference increases, boiling point also increases because more electronegative compound means high bond energy and that higher energy needs too much temperature to boil. This concept can be used to determine the boiling point of the given compounds.
(B)
Interpretation:
The compound with higher boiling point from OsO4 or SrO needs to be determined.
Concept Introduction:
To determine the boiling point of any compound, electronegativity difference of the elements of the compound needs to be calculated. As the electronegativity difference increases, boiling point also increases because more electronegative compound means high bond energy and that higher energy needs too much temperature to boil. This concept can be used to determine the boiling point of the given compounds.
(C)
Interpretation:
The compound with higher boiling point from Cl2O or Al2O3 needs to be determined.
Concept Introduction:
To determine the boiling point of any compound, electronegativity difference of the elements of the compound needs to be calculated. As the electronegativity difference increases, boiling point also increases because more electronegative compound means high bond energy and that higher energy needs too much temperature to boil. This concept can be used to determine the boiling point of the given compounds.
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Chapter 3 Solutions
Bundle: Principles of Modern Chemistry, 8th + OWLv2, 1 term (6 months) Printed Access Card
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- Write the Lewis structures for the following, and include resonance structures where appropriate. Indicate which has the strongest carbon-oxygen bond.(a) CO2(b) COarrow_forwardTHE CHEMICAL FORMULA OF THE FOLLOWING COMPOUND •Sodium hydroxide •Potassium permanganatearrow_forwardWhich compounds have nonpolar covalent bonds, which have polar covalent bonds, and which have ions? (a) LiF (b) CH3F (c) MgCl2 (d) HClarrow_forward
- Consider the following compounds: CaCl 2 , CaI 2 , and MgCl 2 . Answer the following questions based on expected periodic trends: (a) Which is expected to have t he shortest ionic bonds? (b) Which is expected to have the highest lattice energy? (c) Which is expected to have the lowest melting point?arrow_forwardAnswer the following questions that relate to the chemistry of nitrogen. (a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation. 2 N(g) ® N2(g) Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction. Average Bond Energy (k) mol-1) Bond N-N 160 N=N 420 N°N 950 (b) The reaction between nitrogen and hydrogen to form ammonia is represented below. N2(g) + 3 H2(g)® 2 NH3(g) AH° = -92.2 kJ Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer. (C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.arrow_forwardWhich of the following compounds has both ionic and covalent bond? (a) H2O (b) NH4Cl (c) NaCl (d) HClarrow_forward
- Consider the following compounds: BeCl 2 , MgBr 2 , and SrBr 2 . Answer the following questions based on expected periodic trends: (a) Which is expected to have the shortest ionic bonds? (b) Which is expected to have the highest lattice energy? (c) Which is expected to have the lowest melting point?arrow_forwardHow many resonance structures, if any, can be drawn for the nitrate ion (NO3-)? (a) 1 (no resonance) (b) 2 (c) 3 (d) 4arrow_forwardCyanogen (CN)2 is known as pseodohalogen because it has some properties like halogens. It is composed of two CN’s joined together.(i) Draw the Lewis structure for all the possible combination for (CN)2.(ii) Calculate the formal charge and determine which one of the structures that you have drawn is most stable.(iii) For the stable structure, determine the geometry around the two central atoms.(iv) For the stable structure, draw the dipole arrows for the bonds.(v) Base on the stable structure, determine the polarity of molecule and state your reason.arrow_forward
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