Carbon dioxide and water readily combine to form carbonic acid.The change in pH as the acid dissociates can be demonstrated with an indicator dye that changes color at a particular pH.In your physiology lab,you perform this experiment in two beakers containing room-temperature water and indicator,labeled as A and B.CO2 is bubbled into solutions A and B from a pressurized tank for 10 seconds.A stopwatch was used to measure how long it took for the solutions to change color.The data below were generated by the students.
Write the chemical equation for this reaction.Determine average values for each beaker.Explain how the reaction times differed.What may be present in beaker B that is absent from beaker A?
Definitions:
Epiphyseal Line
Dense plate of bone in a bone that is no longer growing, indicating the former site of the epiphyseal plate.
Humerus
The elongated bone in the arm that links the shoulder with the elbow.
Epiphyseal Plate
A hyaline cartilage plate in the long bones where bone growth occurs in children and adolescents.
Longitudinal Growth
Growth in length of bones, resulting primarily from the activity of the growth plates located near the ends of long bones.
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