I need help with this question: Suppose you bake two cakes and the the one with twice as much baking powder raises twice as much. Is this proof of the relation between concentration and reaction rate?
See I know concentration has an affect on reaction rate but I am not sure if this senario is proof that it does.PLEASE HELP!
I don't think so. The reaction rate = k*concentration but the concentration of baking powder doesn't increase with increasing baking powder because it is a solid. Adding more, or course, increases the amount of baking powder available to be decomposed but it doesn' change the rate.
Lakes that have been acidified by acid rain can be neutralized by addition of limestone (CaCO3) . How much limestone in kilograms would be required to completely neutraluze a 5.2 x 10-l lake containing 5.0 x 10 g if h2so4 per liter?
You're correct in thinking that the concentration of a solid, such as baking powder, does not directly affect the reaction rate. In the scenario you described, where one cake has twice as much baking powder and raises twice as much, it does not prove the relationship between concentration and reaction rate.
The reaction rate is determined by the concentration of reactants that are involved in the chemical reaction. In this case, the concentration of the baking powder does not change during the baking process because it is a solid. Therefore, the reaction rate remains the same regardless of the amount of baking powder present.
To understand the relationship between concentration and reaction rate, you would need to perform a different experiment where you vary the concentration of a reactant in a chemical reaction, and measure the corresponding changes in the reaction rate. This way, you can observe the direct cause-effect relationship between concentration and reaction rate.
Additionally, it's important to note that the rate equation, which describes the relationship between concentration and reaction rate, is specific to each reaction. In the case of baking a cake, the chemical reactions involved are complex and not typically described by a simple rate equation.
In summary, while it is true that concentration can affect reaction rate in certain chemical reactions, the scenario you described with baking powder and cakes does not provide proof of this relationship. To investigate the impact of concentration on reaction rate, you would need to conduct a different experiment with appropriate reactants and measurement techniques.