Answer:
- <em>c. The reaction is spontaneous at all temperatures.</em>
Explanation:
The spontaneity of a reaction can be determined by the thermodynamic property named Gibb's free energy or simply free energy (G).
The change in the free energy of a system is defined as the difference between the increase in enthalpy (ΔH) and the product of the temperature (T) times the increase in entropy (ΔS):
The sign of ΔG tells if a reaction is spontaneous according to this:
- ΔG < 0, the reaction is spontaneous.
- ΔG = 0, the reaction is in equilibrium.
- ΔG > 0, the reaction is not spontaneous.
The question states that a reaction is exothermic, and its entropy change is positive. That means:
- Exhotermic: ΔH < 0
- Positive entropy change: ΔS > 0
Remember that the temperature is stated in absolute scale, so T is always positive.
Hence, ΔG = ΔH - T ΔS = (negative) - T (positive) = (negative) + (negative) = negative.
<u>Conclusion</u>: since ΔG is negative, regardless the temperature, you conclude that<em><u> the reaction is spontaneous at all temperatures, which is the option c.</u></em>
Answer: The coordination number of Cu+ is two while the coordination number of O2- is 4
Explanation:
The coordination number of an ion in a unit cell arrangement refers to the number of immediate neighboring ions of opposite charge surrounding a particular ion. In Cu2O, the charge on Cu is +1 and the charge on the oxide ion is -2. Each copper I ion is surrounded by two oxide ions while each oxide ion is surrounded by four copper I ions in each unit cell.
Answer:
d) additional heat alters the vicosity and the surface tension of the liquid which raises the vapor pressure and increases the boiling point which is why you must continually heat the solution
Option C: Introducing sewage in water systems increases the concentration of solids.
Sewage is one of the most concerning sources of water pollution. Sewage, in simple terms, is the wastewater that contains compostable materials from the kitchen, industries, bathrooms, etc.
When untreated sewage is introduced into the water bodies, the microorganisms in it take up the oxygen from water for their aerobic respiration. As a result, the resident organisms of the water body have to struggle to survive due to the lack of oxygen in the water.
Sewage also contributes to the eutrophication of water bodies. Eutrophication is the process by which the nutritional elements, like phosphates and nitrates, in a water body, are enhanced causing the microorganisms to feast over them.
Sewage has some solid particles that can't be dissolved or decomposed. This then leads to the concentration of solids at the base of the water body. This further leads to the growth of various organisms using dissolved oxygen and leads to the deterioration of water quality.
To know more about sewage water, refer to the following link:
brainly.com/question/10022625
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