Why is photosynthesis not spontaneous?
Why is photosynthesis not spontaneous?
Photosynthesis is an example of a nonspontaneous reaction. A plant absorbs water and carbon dioxide. But for it to get converted, sunlight is required. This is a nonspontaneous reaction.
How do detergents found in dish soap help clean cooking oils off dirty dishes?
Detergents and soaps are used for cleaning because pure water can’t remove oily, organic soiling. Soap cleans by acting as an emulsifier. Basically, soap allows oil and water to mix so that oily grime can be removed during rinsing.
How do the detergents found in dish soap help clean cooking oil off of dirty dishes quizlet?
Chemical interaction with soap or detergent traps the oily and greasy soil molecules. In aqueous solution, surfactants cluster near the surface. 2. The hydrophobic tails are attracted to grease and the hydrophilic heads to the water, thereby forcing the grease away from the soiled surface.
What is δg ∘?
The standard free energy of formation (ΔG∘f), is the change in free energy that occurs when 1 mol of a substance in its standard state is formed from the component elements in their standard states. Tabulated values of standard free energies of formation are used to calculate ΔG° for a reaction.
Can photosynthesis be spontaneous?
Photosynthesis is not a spontaneous reaction, as indicated by the ΔH of the reaction, which is positive and means that energy input is required for the reaction.
How do you make a reaction spontaneous?
A spontaneous reaction may involve an increase or decrease in enthalpy, it may involve an increase or decrease in entropy, but it will always involve a decrease in free energy that is a negative ΔG. When ΔG is negative, the reaction would go in the direction of reactants forming products.
Is dishwashing liquid dissolve cooking oil?
The dish soap is attracted to both water molecules and oil molecules, which is why it forces them to mix. The soap acts to dissolve the oil, allowing the oil and water to mix together. The oil molecules are suspended in the dish soap, which is suspended in the water.
How does soap remove dirt and dust from clothes?
When you mix soap with dirt and water, the soap molecules break up the dirt and the bacteria it contains by forming circles around individual droplets—the fatty chains go in the middle facing the dirt, while the salt balloon tops form the outside of the circle facing the surrounding water.
Do most enzymes or bioactive molecules work effectively within a broad range of pH?
Most enzymes or bioactive molecules work effectively within a broad range of pH. can have a maximum of 2 electrons. Isotopes are different forms of the same element. The presence of salt helps prevent oceans from freezing.
Is soap a surfactant?
Soaps and detergents are made from long molecules that contain a head and tail. These molecules are called surfactants; the diagram below represents a surfactant molecule.
Is Gibbs free energy spontaneous?
If the Gibbs Free Energy for a process is negative, the process is spontaneous. If the Gibbs Free Energy is positive, the process is non-spontaneous. It is important to point out that spontaneous does not mean fast; in fact, many spontaneous reactions are extremely slow.