Homework Answers
1) An increase in the concentration of a reactant will lead to a decrease in the amounts of all reactants and an increase in the amounts of all products. An increase in the concentration of a product will lead to a decrease in the amounts of all products and an increase in the amounts of all reactants.
2) If the reaction is endothermic as written, an increase in temperature will cause the forward reaction to occur, increasing the amounts of the products and decreasing the amounts of reactants. Lowering the temperature will produce the opposite response. A change of temperature has no effect on an athermal reaction.
3) The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. This is done by cutting the substance into small pieces, or by grinding it into a powder. If the surface area of a reactant is increased: ... the rate of reaction increases.
4) 1:50 Trial 5
3:50 Trial 2
7:58 Trial 1
12:20 Trial 3
19;20 Trial 4
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At Home Reaction Rates Lab Part I (Questions are of 5 points each. 1) What is...
some of the reagents used in this lab are easily confused: such as persulfate and thiosulfate....
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
Please answer question 1 & 2 based on the data provided Reaction 3 represents the equilibrium...
Please answer question 1 & 2 based on the data provided
Reaction 3 represents the equilibrium between Co2t coordination complexes in mixtures of 2-propanol and methanol. Cotet + 3M = Cooct + P Reaction 3 1. For beakers A-E: a) Do you expect Key to be the same for each beaker? Explain. b) Did you find that Keg is indeed constant for these solutions? Briefly explain, stating your criteria for constancy c) How did increasing the proportion of methanol in...
i need all POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity...
i need all
POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity 1 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M NA,CO, you added 4 ml. Explain. 2. In Activity 6 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M HCl you added 4 ml. Explain. 3....
Below is a lab hand out for the questions. All my data for the questions are...
Below is a lab hand out for the questions. All my data for the questions are filled out below in BOLD LETTERING. All the questions I need answered are at the bottom with boxes where to put the answers. Background Alka-Seltzer� is an over-the-counter antacid and pain relief drug. The tablet contains aspirin (acetylsalicylic acid), citric acid, and sodium bicarbonate (NaHCO3). Sodium bicarbonate (NaHCO3) is responsible for the effervescent action of Alka-Seltzer. In this lab we will investigate the reaction...
Experiment 2 – The effect of temperature on the activity of catalase In this lab you...
Experiment 2 – The effect of temperature on the activity of catalase In this lab you will determine the effect of temperature on catalase activity Materials Yeast Measuring spoon 2 clean test-tubes hydrogen peroxide solution 10 ml graduated cylinder 2 balloons 1 beakers Permanent marker and tape / wax pencil stopwatch or timer crushed ice in a beaker/bowl Thermometer Procedure With a permanent marker, label tubes 1- 2. Fill each tube with 10 ml hydrogen peroxide. Place tube 1...
3-5 pls Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1....
3-5 pls
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid employed in this reaction? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO, not concentrated HCl, was used in this experiment? 4. Which ring of...
I don't understand what calculations I would have made to create the buffer solution from Part...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
please help with- chem lab: Reaction Rates After Thought (1-4d) THANKS!! REACTION RATES The After Thought...
please help with- chem lab: Reaction Rates After Thought (1-4d)
THANKS!!
REACTION RATES The After Thought 1. Cross out the incorrect statement(s) dealing with factors affecting the rate of a chemical reaction. The rate of a chemical reaction increases: - with increasing concentration of a reactant since the number of collisions increases - with decreasing temperature since the activation energy is reduced - by pulverizing a reacting solid because its exposed surface area increases - with the addition of a...
Just part b and c, rates are on left please Calculate the pH of the solution...
Just part b and c, rates are on left please
Calculate the pH of the solution you will prepare for this experiment u 6.91. The following reaction was performed: The time to produce 1.0 x 10 4M of the product was measured. Calculate the rale (amount of product/time) for each run and fill it in the table Find the orders with respect to A. B and C' and the rate constant k. What would the effect be of adding an...
Consider the following reaction at 25 degree C: 2HNO_3 (aq) + NO(g) rlhar 3 NO_2(g) +...
Consider the following reaction at 25 degree C: 2HNO_3 (aq) + NO(g) rlhar 3 NO_2(g) + H_2O(l) Calculate Delta G degree rxn using the following information HNO_3 (aq) NO(g) NO_2(g) H_2O(l) Delta H^degree (kJ/mol) -207 91.3 33.2 -285. 8 S^degree (J/mol K) 146 210.8 240.1 70.0 Calculate the value of the equilibrium constant, K, at 25 degree C At 25 degree C does the above reaction favor reactant or product formation? What evidence supports your conclusion? Procedure: Obtain the five...
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
Please answer question 1 & 2 based on the data provided
Reaction 3 represents the equilibrium between Co2t coordination complexes in mixtures of 2-propanol and methanol. Cotet + 3M = Cooct + P Reaction 3 1. For beakers A-E: a) Do you expect Key to be the same for each beaker? Explain. b) Did you find that Keg is indeed constant for these solutions? Briefly explain, stating your criteria for constancy c) How did increasing the proportion of methanol in...
i need all
POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity 1 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M NA,CO, you added 4 ml. Explain. 2. In Activity 6 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M HCl you added 4 ml. Explain. 3....
3-5 pls
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid employed in this reaction? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO, not concentrated HCl, was used in this experiment? 4. Which ring of...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
please help with- chem lab: Reaction Rates After Thought (1-4d)
THANKS!!
REACTION RATES The After Thought 1. Cross out the incorrect statement(s) dealing with factors affecting the rate of a chemical reaction. The rate of a chemical reaction increases: - with increasing concentration of a reactant since the number of collisions increases - with decreasing temperature since the activation energy is reduced - by pulverizing a reacting solid because its exposed surface area increases - with the addition of a...
Just part b and c, rates are on left please
Calculate the pH of the solution you will prepare for this experiment u 6.91. The following reaction was performed: The time to produce 1.0 x 10 4M of the product was measured. Calculate the rale (amount of product/time) for each run and fill it in the table Find the orders with respect to A. B and C' and the rate constant k. What would the effect be of adding an...
Consider the following reaction at 25 degree C: 2HNO_3 (aq) + NO(g) rlhar 3 NO_2(g) + H_2O(l) Calculate Delta G degree rxn using the following information HNO_3 (aq) NO(g) NO_2(g) H_2O(l) Delta H^degree (kJ/mol) -207 91.3 33.2 -285. 8 S^degree (J/mol K) 146 210.8 240.1 70.0 Calculate the value of the equilibrium constant, K, at 25 degree C At 25 degree C does the above reaction favor reactant or product formation? What evidence supports your conclusion? Procedure: Obtain the five...
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