Chemistry, 19.11.2019 00:31 zackthompson23
(2) (4 pts) gaseous nitrogen dioxide disproportionates spontaneously into nitric acid and nitrous acid in acidic aqueous solution. show this by writing the balanced chemical reaction and evaluating the standard emf (in v) for the reaction.
(3) (4 pts) nitrous acid will not disproportionate spontaneously to the gases nitrogen dioxide and nitric oxide. show this by writing the balanced chemical reaction and evaluating the standard emf (in v) for the reaction.
(4) (22 pts) gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric and concentrated nitric acids, but gold does not dissolve in either acid separately. (you may write net ionic equations in this problem.)
(a) (6 pts) write a balanced chemical equation for the reaction of gold and nitric acid to produce au3+(aq) and nitric oxide. calculate the standard emf (in v) for this reaction. is this reaction spontaneous under standard conditions at 25c?
(b) (6pts)4(aq) and hydrogen gas. calculate the standard emf (in v) for this reaction. is this reaction spontaneous under standard conditions at 25c?
(c) (6pts),i. e.,amixtureofnitricacid and hydrochloric acid, to produce aucl4(aq) and nitric oxide. calculate the standard emf (in v) for the reaction in (e). is this reaction spontaneous under standard conditions at 25c?
(d) (4 pts) concentrated nitric and hydrochloric acid have [h+] > 1.0 m (or [h3o+] > 1.0 m). as [h+] increases, the emf values for the reactions in (a), (b), and (c) all become more positive (or less negative) in value. from this information and your answers to (a), (b), and (c), briefly explain why aqua regia dissolves gold, but that the two separate acids do not.
Answers: 2
Chemistry, 22.06.2019 01:00
Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using
Answers: 2
Chemistry, 22.06.2019 04:30
Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:
Answers: 1
Chemistry, 22.06.2019 08:30
If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?
Answers: 2
Chemistry, 23.06.2019 02:20
Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass
Answers: 1
(2) (4 pts) gaseous nitrogen dioxide disproportionates spontaneously into nitric acid and nitrous ac...
History, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
World Languages, 14.12.2020 19:20
History, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Computers and Technology, 14.12.2020 19:20