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- 7-17 If a certain reaction takes 16 h to go to completion at 10°C, what temperature should we run it if we want it to go to completion in 1 h?7-13 Why are reactions between ions in aqueous solution generally much faster than reactions between covalent molecules?7-22 If you add a piece of marble, CaCO3 to a 6 M HCI solution at room temperature, you will see some bubbles form around the marble as gas slowly rises. If you crush another piece of marble and add it to the same solution at the same temperature, you will see vigorous gas formation, so much so that the solution appears to be boiling. Explain.
- 2. Fill in the missing reaction conditions for each reaction below. OH OH _OH OH Br ОН OH язы OHIn this reaction, catalyst 1 and 2 are 1) -CEC-H -CEC-CH2CH3 2) NH3, 2:Li:1 O NaNH2, 2:CH3CH2CH2Br:10 NaNH2, 2:CH3CH2Br:1 NH3, 2:CH3CH2Br:1In the course, you saw a very important principle, the Châtelier principle. According to this principle, we can optimize chemical reactions. Which means that we can vary the parameters of a chemical reaction to obtain more than one product or one other product. Indicate the change (s) in the reaction below that would increase its speed of reaction. Zn (s) + 2 HCl (aq) --> ZnCl 2 (aq) + H 2 (g)
- In the reaction: HCI + NaOH → NaCl + H₂O if the concentration of NaCl is IM then Select one: O The molarity of NaCl is 2 M O The molarity of Na* is 0.5 M O The formality of Na* is 1 M O The formality of NaCl is 1 MBased upon the chemical equilibrium reaction shown below explain what will happen in each scenario and why?Eb Assessments (Quiz/Test) - CHE 1 X Bb Take Test: Week 11 Quiz - CHE 1 X CO learn.luzerne.edu/webapps/assessment/take/launch.jsp?course_assessment_id=97241_1&course_id%3D Remaining Time: 22 minutes, 27 seconds. v Question Completion Status: QUESTION 9 Which Keg Value indicates the greatest concentration of reactants at equilibrium? O a. 6,7 X 105 C b. 3.2 X 109 O C. 1.4X103 O d.3.2 X 10-7
- 1) Fill in the blanks below with appropriate reaction conditions or reaction products. H2, Pd HBr HBr ,hv OH OHTry Again Your answer is incorrect. • reaction vessel B: Your answer is incorrect. A chemical engineer is studying the following reaction: HCN (aq) + NH3(aq) → CN¯(aq)+NH(aq) At the temperature the engineer picks, the equilibrium constant K for this reaction is 1.1. The engineer charges ("fills") four reaction vessels with hydrogen cyanide and ammonia, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time he measures the compositions. reaction vessel A compound HCN ΝΗ, CN NH₁ concentration 0.28 M 0.12 M 1.05 M 0.94 M expected change in concentration ↑ increase ↑ increase ↑ increase ↓ decrease ↓decrease ↓ decrease ↑ increase O decrease (no change) (no change) (no change) (no change)A student is studying the reaction: 2 CrO4 + 2 H3O Cr207 + 3 H2O If CrO4 is yellow and Cr207 is orange, what colour would the reaction mixture turn if concentrated NaOH was added to the reaction? Type your answer and submit X₂ X² Ω· Write your response here.... Unanswered 6 Explain your answer from question 5 Submit