Principles of the Living Matter A001809 2024-25
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What is obtained by reacting 2-pentene with HBr?
The rate of the following reaction in aqueous solution is monitored by measuring the number of moles of Hg2Cl2 formed per litre per minute. The data obtained are listed in the table.
2 HgCl2(aq) + C2O42–(aq) → 2 Cl–(aq) + 2 CO2(g) + Hg2Cl2(s)
Experiment | [HgCl2] (M) | [C2O42–] (M) | Rate (mol L–1 min–1) |
1 | 0.106 | 0.150 | 1.78×10–5 |
2 | 0.053 | 0.300 | 3.56×10–5 |
3 | 0.053 | 0.150 | 8.90×10–6 |
Determine the order of reaction with respect to HgCl2, with respect to C2O42– and overall.
| Order with respect to HgCl2: | |
| Order with respect to C2O42–: | |
| Overall: |
For the following questions, you may employ the E-notation.For example, 7.15 10-5 is written as 7.15E-5.
What is the numerical value of the rate constant k?
What would be the initial rate of reaction if [HgCl2] = 0.094 M and [C2O42–] = 0.190 M? mol L-1 min-1
What is it possible to say about the reaction mechanism?
(2 pts.)
A sample of gaseous ammonia, measured at 25°C and 1.00 atm, has a volume of 16.0 mL. Calculate:a. The pH of the solution obtained when this sample is completely dissolved in 400 mL of water. (Kb = 1.80 10-5): pH = b. How many mL of a 0.0200 M sulfuric acid solution is required to neutralize all the ammonia: mL
(2 pts.)
Predict what happens when:
| An aluminium bar is immersed in a 1.0 M NaOH solution | and | ||
| An iron nail is dipped into a 1.0 M AgNO3 solution | and | ||
| A copper ring is immersed in a 1.0 M HBr solution | and |
(1.5 pts)
Consider the reaction between oxygen and nitrogen (in their standard state) to give gaseous NO2. Select the correct plot for ΔrG° in the function of T and complete the following sentences.
Which plot correctly describes ΔrG° vs T?
The reaction is:
How can you increase the Kp for the reaction?
(1.5 pts.)
Consider the following reaction: CO (g) + H2O (g) ↔ CO2 (g) + H2 (g) For this reaction, Kc (1227°C)= 0.270. Starting with the same amount (in moles) of the two reactants and bringing the reaction to equilibrium, what is the percentage of CO that has reacted?
Quadratic equation solver: LINK (Do you really need it?)
Percentage of CO reacted: %
(2 pts.)
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