Question 3 • 26-27 - C - RUSD Chemistry in the Earth System
A chemical reaction has triangle cap h f , reactants is equal to negative 1 comma 023 kJ and triangle cap h f , products is equal to negative 935 point 3 kJ Which graph can be used to represent this reaction pathway?
Answer
A
Image with description A graph with reaction progression as the horizontal axis and Energy as the vertical axis. A line starts low on the vertical axis and runs briefly parallel to the horizontal axis. The line rises sharply and then curves down to a point just below the top of the curve and levels out. A dotted line continues from the reactants line and is labeled as negative 935 point 5 kilojoules. A dotted line continues from the product line and is labeled as negative 1023 kilojoules.
B
Image with description A graph with reaction progression on the horizontal axis and energy on the vertical axis. A line starts high on the vertical axis and runs level for a short distance. It rises a short distance and falls steeply to near the horizontal axis; it runs parallel to the horizontal axis. A dotted line continues from the reactants line and is labeled as negative 935 point 5 kilojoules. A dotted line continues from the product line and is labeled as negative 1023 kilojoules.
C
Image with description A graph with reaction progression on the horizontal axis and energy on the vertical axis. A line starts high on the vertical axis and runs level for a short distance. It rises a short distance and falls steeply to near the horizontal axis; it runs parallel to the horizontal axis. A dotted line continues from the reactants line and is labeled as negative 1023 kilojoules. A dotted line continues from the product line and is labeled as negative 935 point 5 kilojoules.
D
Image with description A graph with reaction progression as the horizontal axis and Energy as the vertical axis. A line starts low on the vertical axis and runs briefly parallel to the horizontal axis. The line rises sharply and then curves down to a point just below the top of the curve and levels out. A dotted line continues from the reactants line and is labeled as negative 935 point 5 kilojoules. A dotted line continues from the product line and is labeled as negative 1023 kilojoules.