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Aqua regia is prepared by mixing a nitric acid solution with a hydrochloric acid solution. The resulting mixture is very corrosive and is used to react with things that normally won't react with other molecules. It is used in specialized metal refining situations due to the fact that it can dissolve gold and platinum metals- something that can generally not be done otherwise. When this solution is prepared, a variety of chemical reactions occur which provide the reactive power of the solution. The most important reaction is: 2 HNO3(g) + 6 HCl(g) → 2 NO(g) + 3 Cl2(g) +4 H20(1) AHrxn =-141.16 kJ a. If 10.0 g of HCl and 75.0 g of HNO3 are mixed and allowed to react, which' reactant is the limiting reagent?

Aqua regia is prepared by mixing a nitric acid solution with a hydrochloric acid solution. The resulting mixture is very corrosive and is used to react with things that normally won't react with other molecules. It is used in specialized metal refining situations due to the fact that it can dissolve gold and platinum metals- something that can generally not be done otherwise. When this solution is prepared, a variety of chemical reactions occur which provide the reactive power of the solution. The most important reaction is: 2 HNO3(g) + 6 HCl(g) → 2 NO(g) + 3 Cl2(g) +4 H20(1) AHrxn =-141.16 kJ a. If 10.0 g of HCl and 75.0 g of HNO3 are mixed and allowed to react, which' reactant is the limiting reagent?

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 118IL
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Chem 152 Homework #7 Aqua regia is prepared by mixing a nitric acid solution with a hydrochloric acid solution. The resulting mixture is very corrosive and is used to react with things that normally won't react with other molecules. It is used in specialized metal refining situations due to the fact that it can dissolve gold and platinum metals- something that can generally not be done otherwise. When this solution is prepared, a variety of chemical reactions occur which provide the reactive power of the solution. The most important reaction is: 2 HNO3(g) + 6 HCI(g) → 2 NO(g) + 3 Cl2(g) + 4 H20(1) ΔΗΚ = -141.16 kJ a. If 10.0 g of HCl and 75.0 g of HNO3 are mixed and allowed to react, which' reactant is the limiting reagent? b. Given your answer to part a., determine how many grams of nitric oxide (NO) should be produced? C. Given your answer to part a, how much thermal energy (heat) would be absorbed (or generated) in the reaction of 10.0 g of HCl and 3.00 moles of HNO3 ? d. Is this reaction endothermic or exothermic? Which are more stable (i.e., at a lower energy) the reactants or products? I mole 36.46 Hel 30.01 こ 274364 o Helx 4) 10y 9. I mole N6 I mole 36.01 こ 759HNO3 * 3.02 Has 2 Imole NO
Transcribed Image Text:Chem 152 Homework #7 Aqua regia is prepared by mixing a nitric acid solution with a hydrochloric acid solution. The resulting mixture is very corrosive and is used to react with things that normally won't react with other molecules. It is used in specialized metal refining situations due to the fact that it can dissolve gold and platinum metals- something that can generally not be done otherwise. When this solution is prepared, a variety of chemical reactions occur which provide the reactive power of the solution. The most important reaction is: 2 HNO3(g) + 6 HCI(g) → 2 NO(g) + 3 Cl2(g) + 4 H20(1) ΔΗΚ = -141.16 kJ a. If 10.0 g of HCl and 75.0 g of HNO3 are mixed and allowed to react, which' reactant is the limiting reagent? b. Given your answer to part a., determine how many grams of nitric oxide (NO) should be produced? C. Given your answer to part a, how much thermal energy (heat) would be absorbed (or generated) in the reaction of 10.0 g of HCl and 3.00 moles of HNO3 ? d. Is this reaction endothermic or exothermic? Which are more stable (i.e., at a lower energy) the reactants or products? I mole 36.46 Hel 30.01 こ 274364 o Helx 4) 10y 9. I mole N6 I mole 36.01 こ 759HNO3 * 3.02 Has 2 Imole NO
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Step 1

The balanced reaction given is,

Chemistry homework question answer, step 1, image 1

a) Given: Mass of HCl taken = 10.0 g.

And mass of HNO3 taken = 75.0 g.

 

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