Use the simulation (http://openstaxcollege.org/l/16MolecPolarity) to perform the following exercises for a real molecule. You may need to rotate the molecules in three dimensions to see certain dipoles. (a) Sketch the bond dipoles and molecular dipole (if any) for O 3 Explain your observations. (b) Look at the bond dipoles for NH3. Use these dipoles to predict whether N or H is more electronegative. (c) Predict whether there should be a molecular dipole for NH 3 and, if so, in which direction it will point. Check the molecular dipole box to test your hypothesis.
Use the simulation (http://openstaxcollege.org/l/16MolecPolarity) to perform the following exercises for a real molecule. You may need to rotate the molecules in three dimensions to see certain dipoles. (a) Sketch the bond dipoles and molecular dipole (if any) for O 3 Explain your observations. (b) Look at the bond dipoles for NH3. Use these dipoles to predict whether N or H is more electronegative. (c) Predict whether there should be a molecular dipole for NH 3 and, if so, in which direction it will point. Check the molecular dipole box to test your hypothesis.
Use the simulation (http://openstaxcollege.org/l/16MolecPolarity) to perform the following exercises for a real molecule. You may need to rotate the molecules in three dimensions to see certain dipoles.
(a) Sketch the bond dipoles and molecular dipole (if any) for
O
3
Explain your observations.
(b) Look at the bond dipoles for NH3. Use these dipoles to predict whether N or H is more electronegative.
(c) Predict whether there should be a molecular dipole for
NH
3
and, if so, in which direction it will point. Check the molecular dipole box to test your hypothesis.
Butanol has the chemical formula C4H9OH.
d) In the molecule of butanol, there are C-C bonds, C-H bonds, a C-O bond and a O-H bond. Order these bonds from most to least polar
e) On average, would you expect C-C to have longer or shorter bonds than C-H Briefly explain your answer.
f) From the reaction 2.57 L of carbon dioxide was produced and captured. Calculate the number of molecules of carbon dioxide if the temperature was 25.0 C and the pressure 1. 01 × 105 Pa.
g) The empirical and molecular formula for butanol is the same. Briefly explain why.
Based on Linus Pauling's electronegativity scale, would H2S be considered a polar molecule?
Pick the best answer.
(a) No. It would technically be considered a non-polar molecule.
(b) No. Even though it contains polar bonds they are symmetrical and therefore H2S is non-polar.
(c) No. The electronegativity difference between H and S is so great that it would be considered an ionic compound.
(d) H2S violates the octet rule and therefore would not even exist
3. The following are some molecules:H2, HF, CO2, H2O, Cl2, NH3, CH4, CHCl3
(a) Which of the above molecules do/does not contain polar bond? Explain your answer.
(b) Which covalent bond has the highest bond polarity among the eight molecules?
(c) (i) Which of the above molecules are non-polar molecules?
(ii) Explain why these molecules are non-polar. 4. (d) Draw a diagram to illustrate the formation of hydrogen bonds in H2O.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell