HLSS 230 Homework Assignment Week 1

Suppose a pair of chemical compounds A and B can react in two different ways: A+B → C Reaction 1 gives product C. A+B → D Reaction 2 gives product D. The following facts are known about the two reactions: ● Reaction 1 is endothermic and Reaction 2 is exothermic. • If a reaction vessel is charged ("filled") with A and B, then at first C is produced faster than D. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For exam if one energy is less than another, that fact should be clear in your sketch. Reaction 1 Reaction 2 energy energy reaction coordinate A + B A + B reaction coordinate D

The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation 3H₂(g) + N₂ (g)→2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammonia is difficult, resulting in lower yields than those predicted from the chemical equation. 1.04 g H₂ is allowed to react with 10.4 g N₂, producing 2.68 g NH3. Part A What is the theoretical yield in grams for this reaction under the given conditions? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) μÅ Value Units ?

24. ĮThere are highly active chemicals to be shipped by trucks. Environmental regulations stipulate that two chemicals cannot be shipped in the same truck if the two chemicals react explosively. In the table below, an X in a specific row and column indicates that the chemical of the row reacts explosively with the chemical of the column. If we have one canister of each chemical, how many different trucks must be used to ship the chemicals and what chemicals can be shipped together? Chemicals A B D E F G A X X B X X X X X E X X F X X X X G X X Number of trucks: Chemicals that can be in each truck together: :::

Part 1 A student carried out an investigation to observe the effect of changing concentration of sulfuric acid on the breakdown of calcium carbonate (marble) chips. They changed the concentration of the acid between each test but kept the size of the marble chips constant. The full equation for the reaction and a graph of the overall results can be seen below. CaCO3(s) + H₂SO4(aq) → CaSO4(aq) + CO2(g) + H₂O (1) a) b) Rate of Reaction * Concentration of Acid (mol dm³) Explain, using collision theory, why the student obtained these results, and state what they could conclude about the effect of changing concentration of acid on the rate of reaction between calcium carbonate and sulfuric acid. If the student had ground up the calcium carbonate chips into a powder and run the tests again, what would you expect to happen to the rate of reaction? Briefly explain why by applying collision theory. Part 2 The student ran the same experiment, but this time changed the temperature, increasing it…

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The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation 3H2(g)+N2(g)→2NH3(g)3H2(g)+N2(g)→2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammonia is difficult, resulting in lower yields than those predicted from the chemical equation.     1.74 gg H2H2 is allowed to react with 9.81 gg N2N2, producing 2.24 gg NH3NH3. Part A What is the theoretical yield in grams for this reaction under the given conditions?   Part B What is the percent yield for this reaction under the given conditions?

The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation 3H2(g)+N2(g)→2NH3(g)3H2(g)+N2(g)→2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammonia is difficult, resulting in lower yields than those predicted from the chemical equation.

Suppose a pair of chemical compounds A and B can react in two different ways: Reaction 1 gives product C. A+B → C A+B-D Reaction 2 gives product D. The following facts are known about the two reactions: • Reaction 1 is exothermic and Reaction 2 is endothermic. • If a reaction vessel is charged ("filled") with A and B, then at first D is produced faster than C. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For example, if one energy is less than another, that fact should be clear in your sketch. energy Reaction 1 reaction coordinate energy Reaction 2 reaction coordinate 0 L4 A # Ba

Suppose a pair of chemical compounds A and B can react in two different ways: A+B C Reaction 1 gives product C. A+B D →> Reaction 2 gives product D. The following facts are known about the two reactions: • Reaction 1 is endothermic and Reaction 2 is exothermic. • If a reaction vessel is charged ("filled") with A and B, then at first C is produced faster than D. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For if one energy is less than another, that fact should be clear in your sketch. energy A + B Reaction 1 reaction coordinate energy A + B Reaction 2 reaction coordinate ☑

The reaction between ammonia and oxygen is given below: 2 NH3(g) +2 O2(g) → N2O(g) +3 H₂O(1) We therefore know that which of the following reactions can also occur? N2O(g) +3 H2O(l) → 2 NH3(g) +2 O2(g) 4 NH3(g) +5 O2(g) →4 NO(g) + 6 H₂O(g) 4 NO(g) +6 H2O(g) →4 NH3(g) +5 O2(g) None of the Above