A chemist tested the reaction of potasslum chlorate (KCIO,) and Iron (II) sulfate (FesO) . The Independent varlable Is temperature; other varlables are constant. The results were recorded. Temperature (degrees Kelvin) Reaction Rate (grams per second) 285 1 290 295 3 These results support which conclusion? O An increase in temperature increased the mass of each molecule of reaction product. An increase in temperature increased the amount of reactant present. O An increase in temperature increased the catalytic behavior of reactants. O An increase in temperature increased the rate of collision of reactant molecules.

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12.A decomposition reaction can be represented by the following reaction:Immersive reader A)CaCO3 -------------> CaO + CO2 B) Cu + H2SO4--------->CuSO4 + H2 C) HCl + NH3----------->NH4Cl D) S + O2---------------->S02 E) None of the above.

Iron fillings (very small pieces of iron) rust faster than iron nails. This demonstrates that the rate of reaction depends on the a. temperature of the reactants b. chemical nature of the reacting substances c. state of subdivision of the reactants d. concentrations of the reactants e. presence of a catalyst

The following represents the effect of time on the concentration during a reaction. The upper line represents a reactant concentration and the lower line the concentration of a product. Which of the following statements is not correct? Concentration B C Time → O Between points A and D the reactant concentration is decreasing. O Between points B and C the product concentration is increasing. At point D the rate of the forward and reverse reactions are the same. O At point C the rate of product breakdown equals that of reactant consumption.

Using the collision model for a chemical change, desciebe from a molecular viewpoint how diluting the solutions by adding water prior to mixing will decrease the rate of the reaction

Consider the attached energy diagram for the conversion of A → G. Question: Which points on the graph correspond to transition states?

Which of the following is an application of the influence of temperature on chemical reaction rates? a. a solution is heated so more sugar can be dissolved in it b. food is put into a refrigerator to keep it from spoiling c. water is evaporated from a salt-water solution in order to recover solid salt d. more than one response is correct

The following represents the effect of time on the concentration during a reaction. The upper line represents a reactant concentration and the lower line the concentration of a product. Which of the following statements is not correct? Concentration B C Time → O Between points A and D the reactant concentration is decreasing. O Between points B and C the product concentration is increasing. At point D the rate of the forward and reverse reactions are the same. O At point C the rate of product breakdown equals that of reactant consumption.

1. Reactions that occur in the gaseous state are affected by changing the volume of the container. Which choice best describes what will happen to the reaction if the volume of the container is decreased? The reaction will shift right. The reaction will shift left. The reaction will not change. The reaction will speed up.