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1) Calculate the pH of a solution made by adding 14.0 g of sodium formate, NaHCOO, to 100. mL of 0.79 M formic acid, HCOOH.
2) Phosphoric acid is a triprotic acid:
H3PO4(aq) +H2O(l) ? H3O+(aq) + H2PO4-(aq) Ka1 = 7.5 x 10-3H2PO4-(aq) +H2O(l) ? H3O+(aq) + HPO42-(aq) Ka2 = 6.2 x 10-8HPO42-(aq) +H2O(l) ? H3O+(aq) + PO43-(aq) Ka3 = 4.8 x 10-13
Determine whether sodium monohydrogen phosphate (Na2HPO4) is neutral, basic, or acidic.
First, what is its Ka when it acts as an acid?
Second, what is its Kb when it acts as a base?
Which of the following would be expected to have a bent (angular) shape?
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation:
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A sample of a gas occupies a volume of 323 mL at 625 torr. At constant temperature, what will be the new volume when the pressure changes to the following:
what practical and creative decision must a scientist make? What important criteria must this choice fulfill?
Calculate [H+] and the pH of the following solutions.
Which of these statements correctly describes a diamond?
effectively prevents hemoglobin from transporting oxygen to cells. How is the carbon monoxide acting in this process?
The compound, an eight-carbon alkane, serves as the 100 octane standard for gasoline. It has five methyl groups, one quaternary carbon, tests negative for C-C double bonds and gives four monochloro substitution products
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