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What is meant by the reaction rate in chemistry?
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The reaction rate is the speed at which reactants are converted into products in a chemical reaction.
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How does temperature affect reaction rate?
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Increasing temperature generally increases the reaction rate because it raises the energy levels of the molecules, increasing the number of collisions.
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What role does concentration play in affecting the reaction rate?
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Higher concentration of reactants usually leads to a higher reaction rate because more reactant particles are available to collide.
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How do catalysts affect the rate of reaction?
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Catalysts increase the reaction rate by providing an alternative pathway with a lower activation energy.
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What is the effect of surface area on the reaction rate?
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Increasing the surface area of a solid reactant increases the reaction rate by allowing more area for collisions to take place.
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What is activation energy?
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Activation energy is the minimum energy required for a chemical reaction to occur.
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How does pressure affect the reaction rate of gases?
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Increasing pressure increases the reaction rate of gases by reducing volume and increasing frequency of molecular collisions.
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What is the collision theory of reaction rates?
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Collision theory states that chemical reactions occur when particles collide with sufficient energy and correct orientation.
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What is meant by a rate-determining step?
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The rate-determining step is the slowest step in a reaction mechanism that limits the overall rate of the reaction.
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Describe the impact of solvent on reaction rate.
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The solvent can affect the reaction rate by influencing reactant solubility and interaction frequency.
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How do inhibitors affect the rate of reaction?
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Inhibitors decrease the reaction rate by interfering with reactant interactions or catalyst action.
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What is a homogeneous catalyst?
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A homogeneous catalyst is in the same phase as the reactants and facilitates the reaction in the same phase.
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Explain what a heterogeneous catalyst is.
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A heterogeneous catalyst is in a different phase than the reactants and typically provides a surface for the reaction to occur.
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What is the role of light in affecting reaction rates?
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Light can increase reaction rates by providing energy to molecules, leading to photochemical reactions.
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Why does increasing the number of reactant particles increase the rate of a reaction?
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More reactant particles increase the chance of effective collisions, hence increasing the reaction rate.
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