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A reaction is spontaneous when it releases energy and increases the disorder of the system. This is determined by the change in Gibbs free energy (G) being negative. For example, the combustion of gasoline is a spontaneous reaction because it releases energy in the form of heat and increases the disorder of the system.
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Example of physical reaction?
An example of a physical reaction is the rusting of iron when exposed to moisture and oxygen in the air. This reaction causes the iron to form iron oxide, a reddish-brown compound known as rust, changing the appearance and properties of the iron.
What causes the reaction rate to decreases as the reaction progresses?
The concentration of the reactants decreases.
An increase in temperature will cause the rate of a chemical reaction to?
Increasing the temperature the dissolving rate increase.
What the difference between reaction and response?
A reaction is what happens to the body when a stimulus is applied, a response is what happens next; i.e a stimulus illicits a reaction which illicits a respose. For example, glucose in the blood (a stimulus) causes the pancreas to release insulin (a reaction), which in turn causes the cells to take up glucose from the blood (a response).
What are the word equation for the reaction that causes potassium to tarnish?
The word equation for the reaction that causes potassium to tarnish is: potassium (K) + oxygen (O2) → potassium oxide (K2O).
Where does the small amount of technetium from the earth come from?
Two causes are possible: - spontaneous fission of uranium - a reaction (n, gamma) of molybdenum
Is tarnished silver an endothermic reaction?
No, tarnishing of silver is not an endothermic reaction. Tarnishing is a result of a chemical reaction with sulfur compounds in the air, which causes the silver to become dull and discolored. This reaction does not require an input of energy, making it a spontaneous process.
What is an example of an feedback inhibition?
an excess of a product of one reaction causes the enzyme of another reaction to stop working.
An electrolytic cell is different from a voltaic cell because in an electrolytic cell?
In an electrolytic cell, an external power source is needed to drive a non-spontaneous redox reaction, while in a voltaic cell, the redox reaction is spontaneous and generates electric energy. In an electrolytic cell, the anode is positive and the cathode is negative, whereas in a voltaic cell, the anode is negative and the cathode is positive.
What name means spontaneous?
happening or arising without apparent external causes
What causes nails to rust?
The rusting of a nail is a spontaneous, although slow, reaction. The iron in the nail reacts with water in the atmosphere or water that has condensed or falled onto it to produce ferric oxide, which is rust.
Why a catalyst is not considered a reactant or product in chemical reaction?
A catalyst is unchanged by the reaction, and remains as it was. It causes the start of the reaction, but is still there AFTER the reaction. Example- the catalytic converter on an automobile exhaust contains platinum metal. This causes a chemical reaction to take place in the exhaust gasses, but the metal remains in the converter, and is not consumed.
Is frying an egg a synthesis reaction?
Frying an egg is a synthesis reaction. The combination of heat which causes a reaction in the egg whites creates a chemical reaction. When you take these simple components and create a complex reaction this is a prime example of a synthesis reaction.
A chemical reaction causes a chemical change true or false?
It is true that a chemical reaction causes a chemical change. An example of this can be seen by adding baking soda to vinegar.
Example of physical reaction?
An example of a physical reaction is the rusting of iron when exposed to moisture and oxygen in the air. This reaction causes the iron to form iron oxide, a reddish-brown compound known as rust, changing the appearance and properties of the iron.
What chemical reaction causes precipitation?
This is a precipitation reaction.
What hormone causes demineralization of bones spontaneous fractures could it be parathyroid hormone?
parathyroid hormone
