NaCl (s)-> NaCl (aq) is accompanied by an increase in entropy because [Select] [Select] a solute was dissolved in water, forming a solution the number of products is greater than the number of reactants the phase change from vaporization is towards a higher internal energy
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![NaCl (s) -> NaCI (aq) is accompanied by an increase in entropy because
[Select]
[Select]
a solute was dissolved in water, forming a solution
the number of products is greater than the number of reactants
the phase change from vaporization is towards a higher internal energy](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F790403c6-3ff1-4e96-a049-b154822a3275%2Fe1db4fb3-9b48-41f4-8019-a2672da02e5a%2F096wdwd_processed.png&w=3840&q=75)
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- Figure 1 Figure 2 Reaction Reaction Abe notices that the temperature of the mixture in figure 1 gets colder. Abe nota que la temperatura de la mezcla en la figura 1 se vuelve más fría. A) Describe the systems (i.e. in the reaction and its surroundings), in which the energy is conserved, represented by the two figures. B) Explain why energy is neither created nor destroyed in these systems. Energy- EnergyThe distribution of Na* ions across a typical biological membrane is 10 mmol/dm3 inside the cell, and 140 mmol/dm³ outside the cell. At equilibrium, the concentrations across the membrane are equal. What is the Gibbs energy difference across the membrane at 37°C? The stated difference in concentration MUST be maintained by coupling to reactions that have at least your calculated difference of Gibbs energy. Ans: 6.8 kJ/molThe following equation, which represents the oxidative breakdown of glucose by body cells, is a reversible reaction. Glucose + oxygen S carbon dioxide + water + ATP (a) How can you indicate that the reaction is reversible? (b) Howcan you indicate that the reaction is in chemical equilibrium? (c) Define chemical equilibrium.
- In the following reaction in aqueous solution, the acid reactant is and its conjugate base product is CH;COOH + NH3 CH;CO0 + NH,"Suggest an appropriate reason for the observation : “On increasing temperature of the reacting system by 10 degrees, the rate of reaction almost doubles or even some times becomes five folds.”In an experiment, identical heat lamps are arranged to shine on two identical containers, one containing water and the other containing, methanol, a nonpolar compound. Each liq- uid absorbed the same amount of energy minute by minute, and the change in tempera- ture over time was recorded for each molecule. The results from the experiment are illus trated in the graph below. A B 40 с temperature (°C) D 25 The heat-related temperature of water and methanol increases over time. methanol Which of the following best explains the results illustrated in the above figure? time (minutes) water 20 Water temperature increases more quickly because part of the supplied heat energy is used to transition the water molecules from a liquid physical state to a gaseous physical state, which does not occur in methanol Water temperature increases more quickly because part of the supplied heat energy is used to break the hydrogen bonds between water molecules, which do not occur be tween methanol…
- For the chemical reaction that results in the formation of a peptide bond between two amino acids, AG = +4 kcal/mol. Based on this information, which of the following labels would be appropriate to describe this reaction? O Exergonic O Hydrolysis O Redox O EndergonicDespite the thermal stability of covalent bonds in physiological systems, some of these bonds are sensitive to energy input from external sources. The molecule can absorb heat from the environment without changing its chemical structure, as will occur when there is a local temperature increase. If the increase in energy is above kT (i.e., the entire environment has not increased its temperature), the molecule will come to thermal equilibrium with the environment around it, and return to its original energy state. Which one of the following physiological process is example to this? Select one : a. Absorbance of light by 11-cis-retinal. b. Translucent to opaque conversion of egg whites after cooking. C. Absorbance of light by melanın. d. a & b e. a & c f.b&c g. a, b & cThis is a plot under standard conditions of free energy corresponding to a chemical reaction of A+B to C+D. What will happen if only C+D are present under standard temperature and pressure? Please explain why.
- Free energy, G Transition state (‡) A ES EP AGuncat P Reaction coordinate Nelson & Cox, Lehninger Principles of Biochemistry, Be Ⓒ2021 W. H. Freeman & Company What term BEST describes the feature indicated by the green arrow? rate-limiting step free-energy change AG binding energy X reaction intermediate ground stateReactants: Sodium Hydroxide (NaOH) Potassium Permanganate (KMnO4) Glucose (C12H22O11) What is the purpose of the sodium hydroxide in the redox reaction experiment?What is the change in entropy when 150 mL of cold (278 K) water is added to 150 mL of near-boiling (368 K) water? Ignore any potential heat loss to the surroundings; only consider the water. For water, Cp = 75.3 J K-1 mol-1.