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What governs the rate of chemical reactions?
Generally, the energy required to initiate the reaction. Reactions that release energy (exothermic) can proceed faster than those that require energy to be added (usually in the form of heat energy).
What is the relationship between reactants and products involved in photosynthesis?
In photosynthesis, reactants such as carbon dioxide and water are converted into products like glucose and oxygen using light energy. The reactants are used up during the process, while the products are formed as a result of the chemical reactions that take place in the presence of chlorophyll and sunlight.
What factors influence the position of equilibrium in a chemical reaction?
The position of equilibrium in a chemical reaction is influenced by factors such as temperature, pressure, concentration of reactants and products, and the presence of catalysts. These factors can shift the equilibrium towards the formation of more products or more reactants, depending on the conditions of the reaction.
How might you cause an edothermic chemical change to begin and keep going?
By supplying energy to it.Explanation:Since an endothermic reaction, by definition, NEEDS energy to go on, it will cool down (= taking heat energy from the reactants). It will stop itself as any reaction will slow down at lower(ing) temperatures.So SUPPLY of heat is at least necessary to KEEP temperature at its minimum level of 'ongoing' reaction. (to: Chasity cordero)
What leads to the increase in the rate of a chemical reaction?
Many things lead to an increase in the rate of chemical reactions. These factors include: - Addition of Catalysts - Light (only in some reactions) - Increase in temperature - Increase in Pressure - Increase in amount of reactants
What are different factors that affect the rates of chemical reactions?
Some different factors that affect the rates of chemical reactions include whether or not a catalyst is present, the concentration of the reactants, temperature of the reactants, & pressure in the case of gas phase reactions.
What will the profile for endothermic and exothermic with the catalyst added?
In the presence of a catalyst, both endothermic and exothermic reactions will have their activation energy lowered, allowing them to proceed more quickly. For endothermic reactions, the overall energy profile shows a reactant state with lower energy than the products, but the catalyst reduces the energy barrier for the transition state. In exothermic reactions, the reactants start at a higher energy level than the products, and again, the catalyst facilitates the reaction without altering the energy difference between reactants and products. Thus, while the catalyst speeds up the reaction, it does not affect the overall energy change (ΔH) for either type of reaction.
What does gas formation mean?
Gas formation refers to the release of gas molecules during a chemical reaction. This can result in the production of bubbles or expansion of a substance. Gas formation is a common phenomenon in many chemical reactions and can be used to indicate the presence of certain reactants or products.
What are the two reactions are also redox reactions?
Two common types of reactions that are also redox reactions are combustion reactions and respiration. In combustion, a substance reacts with oxygen, resulting in the release of energy and the formation of oxidized products, such as carbon dioxide and water. Similarly, cellular respiration involves the oxidation of glucose in the presence of oxygen, producing energy, carbon dioxide, and water. Both processes involve the transfer of electrons between reactants, characterizing them as redox reactions.
What are four ways that chemists can control chemical reactions?
increase in surface area, increase in temperature, increase the concentration of the reactants, and the presence of catalysts or inhibitors.
What are the four factors that affect the rate of a chemical reaction?
The four factors that affect the rate of a chemical reaction are the concentration of reactants, temperature, presence of a catalyst, and surface area of reactants (for reactions involving solids or liquids). These factors influence how frequently and effectively particles collide to form products.
Does glucose increases the speed of chemical reaction?
Glucose can act as a substrate for biological reactions, but it does not inherently increase the speed of chemical reactions. The rate of a chemical reaction is determined by factors such as temperature, concentration of reactants, and presence of catalysts.
What governs the rate of chemical reactions?
Generally, the energy required to initiate the reaction. Reactions that release energy (exothermic) can proceed faster than those that require energy to be added (usually in the form of heat energy).
What is the relationship between reactants and products involved in photosynthesis?
In photosynthesis, reactants such as carbon dioxide and water are converted into products like glucose and oxygen using light energy. The reactants are used up during the process, while the products are formed as a result of the chemical reactions that take place in the presence of chlorophyll and sunlight.
What are the main factors that effect reaction rates?
The main factors that affect reaction rates are temperature, concentration of reactants, presence of a catalyst, and the physical state of the reactants (solid, liquid, gas). Increasing temperature generally increases reaction rates by providing more energy to overcome activation energy barriers. Higher concentration of reactants also speeds up reactions by increasing the frequency of collisions. Catalysts lower activation energy and accelerate reactions without being consumed. Lastly, reactions involving gaseous or liquid reactants typically proceed faster than those involving solid reactants due to increased molecular mobility.
What conditions are needed for the natural formation of atmospheric ozone?
The natural formation of atmospheric ozone requires presence of oxygen, sunlight, and the presence of pollutants or precursor gases such as nitrogen oxides and volatile organic compounds. These factors initiate chemical reactions leading to the formation of ozone in the atmosphere.
When iron and oxygen combine to form rust what is are the reactants?
The reactants in the formation of rust are iron (Fe) and oxygen (O2). When iron reacts with oxygen in the presence of water or moisture, it forms iron oxide, commonly known as rust.
