General Chemistry Answers

4. Balance the following redox reaction in a basic solution. Use any method you prefer (oxidation number method or half reaction method). Ce4+ + I –  Ce3+ + IO3 –

Balance the following redox reaction in an acidic solution using any method you prefer (oxidation number or half reaction). H2PO2 - + TeO4 2-  PO4 3- + Te

~ How would you describe MDMA's bonding arrangement according to Valence Bond Theory? Include details with respect to bond angles and orbital hybridization, the presence of σ and π bonds, etc.

~How would you describe its general shape and intermolecular forces? What does its shape have to do with its functions, effects, and properties?

~ How would you describe MDMA's (C11H15NO2) bonding arrangement according to Valence Bond Theory? Include details with respect to bond angles and orbital hybridization, the presence of σ and π bonds, etc.

~How would you describe its general shape and intermolecular forces? What does its shape have to do with its functions, effects, and properties?

 pH = 6.0

0.000675 M

 0.000675 M calcium hydroxide

A 400 mL buffer solution was prepared by reacting sodium acetate, CH3COONa,

with 1.00 M acetic acid, CH3COOH, with a pH of 4.56 Calculate the mass of

CH3COONa required to prepare the solution. Ka CH3COOH= 1.75 x 10-5

Give an example of

a) an endothermic process that is spontaneous

b) an exothermic process that is spontaneous

c) a reversible process

d) an irreversible process

a solution of Ba(OH)2 was standardized against 0.1016g of primary standard benzoic acid C6H5COOH calculate the concentration of if the endpoint was 20.89mL