and Na₂S₂03 Well # C1, D1 C2, D2 C3, D3 12 6 #of # of # of Stock Stock Reaction Reaction (after (after drops drops drops Solution Solution mixing in mixing in well) well) HCI H₂O Na₂S,0, HCI Na₂S,0, HCI Na₂S,0, 4 0 6 8 Data Table 1. Varying Concentrations of 1.0M HC1 8 mining the Rate Laws of the Reaction between HC1 8 8 Concentrations 1M 0.3M 1M 0.3M 1M 0.3M Reaction Time (seconds) Trial Trial 1 2 Average Reaction Rate (sec¹)

Energy diagrams for two reactions are shown. 150 150 100 100 50- 50- Reaction progress Reaction progress Reaction A Reaction B What is the heat of reaction for Reaction A? What is the heat of reaction for Reaction B? AHrxn A kJ AHrxn B kJ mol mol What is the activation energy for Reaction A? What is the activation energy for Reaction B? kJ kJ Ea rxn A = Ea rxn B = mol mol Energy (kJ/mol)

= For a different reaction X2Y, the initial [X] 1.0 M, and [Y] = 0 M. After 5 minutes the [X] has fallen to 0.8 M and then does not change any further. Draw a graph of [X] v time for the first 10 minutes. Use the blank template graph from Q1. Use the editor to format your answer

Which of the reactions will have a faster rate?

7. Reactions A and B were studied and found to produce the given energy diagrams. 150 150 Energy 100 (kJ/mol) 100 Energy (kJ/mol) 50 50 Reaction progress Reaction progress Reaction A Reaction B A third reaction, C was studied with a measured activation energy of 55 KJ/mol. Assume all reactions take place at the same temperature. Reaction A is slowest a. b. Reaction B is slowest c. Reaction C is slowest d. All reactions happen at the same rate.

7

A student follows the Determining the Rate Law for the Crystal Violet-Hydroxide lon Reaction procedure. The stock concentration of sodium hydroxide used in trial 1 is 0.021 M. The stock concentration of sodium hydroxide used in trial 2 is 0.010 M. Given the data below, what is the hydroxide ion concentration (M) in the trial 1 reaction mixture? Give your answer to four decimal places. Volume NaOH Volume Crystal Violet (mL) (mL) Trial 1 5.00 5.00 Trial 2 5.00 5.00

The following graph presents the relationship between concentration and time for the reaction: 2 A → C 30 25 20 15 10 6. 8 10 12 Time (sekon) The slope of the graph line is.. A. In A В. — 1/K С. - k D. k Е. k1 2. 5.

Help!!!!!!

Consider a chemical reaction where reagents --> products, and the concentration of the products is determined over time.  Calculate the rate of the reaction from the data provided: time (sec)    [products]     25.0                 0.375     49.0                 0.786     a. 0.00100 M/s   b. 0.017 M/s   c. -58.4 s?m   d. 58.4 s/M   e. -0.017 M/s