When temperature increases, the amount of atomic or molecular collisions between molecules increases. But the change in reaction rate with temperature is not just a function of the temperature; instead, temperature increases actually affect the rate constants (written k) of reactions in a predictable ...
Sometimes a reaction depends on catalysts to proceed. In that case, changing the concentration of the catalyst can speed up or slow down the reaction. For example, enzymes speed up biological reactions, and their concentration affects the rate of reaction. On the other hand, if the enzyme is ...
The rate of reaction is simply how fast the reaction occurs. Some reactions, like explosions, are very fast. Other reactions, like the rusting of iron, are much slower. Several things can affect the rate of the reaction including the temperature, pressure, or presence of a catal...
What must happen for a chemical reaction to occur? How do you know when a chemical reaction is complete? How does a limiting reactant affect a reaction? How are all chemical reactions alike? What is a balanced chemical reaction? Adding a catalyst to a chemical reaction will do what?
How do enzymes affect reactions?Activation Energy:The activation energy of a reaction is the amount of energy needed to cause the reaction to start. Not all chemical reactions have an activation energy, and some will start spontaneously without any added energy or catalyst. One example of this ...
How do structure and topology of the catalyst affect water promotion or inhibition effects?In this activity article, team members of Yanhui Yang (professor at the School of Chemistry and Molecular Engineering at the Nanjing Tech University) and Daniel E. Resasco (professor at the School of ...
Methanol fuel cells are comparable to a PEMFC in regards to operating temperature but are not as efficient. Also, the DMFC requires a relatively large amount of platinum to act as a catalyst, which makes these fuel cells expensive. Reversible Fuel Cells ...
How Does Ph Affect Enzyme Activity affectingEnzymeActivity: The effect ofpHonenzymeactivityBackground Knowledge: Anenzymeis a biological catalyst – which speeds up the reaction rate‚ without itself getting altered.Enzymesare proteins with long polypeptide chains that are folded up...
In order to explore the relationship between corporate green technological innovation and the risk of stock price crash, First, we analyzed the data of listed companies in China from 2008 to 2018, and constructed indicators for the quantity and quality of corporate green technology innovation. The ...
The need to limit antibiotic therapy due to the spreading resistance of pathogenic microorganisms to these medicinal substances stimulates research on new therapeutic agents, including the treatment and prevention of animal diseases. This is one of the g