Equilibrium Graphs Grade 12: Concentration - Exploring System Response
Explore equilibrium graphs grade 12 concentration in chemistry. Learn how systems in equilibrium respond to changes in concentration. Le Chatelier's principle applies.
00:00:00 Equilibrium Graphs grade 12: Concentration. Understand how systems in equilibrium respond to changes in concentration.
🔑 The previous lesson explored the formation of ammonia through a reaction between nitrogen and hydrogen.
⚖️ The system reaches equilibrium when the rate becomes constant.
🔀 Changing the concentration of nitrogen disrupts the equilibrium, causing the system to react and restore equilibrium.
00:01:03 In this video, we explore the concept of equilibrium graphs for concentration in grade 12 chemistry. We learn that the forward reaction is favored and observe changes in the nitrogen and hydrogen levels. The ammonia level increases as the system reaches equilibrium.
🔍 The forward reaction is favored over the reverse reaction due to the consumption of nitrogen and hydrogen.
⬆️ The amount of ammonia increases as the forward reaction is favored, indicating the system reaching equilibrium.
🔄 The rate graph shows that the forward reaction spikes upwards and settles at a higher level, while the reverse reaction remains relatively unchanged.
00:02:06 Equilibrium graphs demonstrate that increasing pressure, concentration, or temperature speeds up the reaction, while decreasing them slows it down.
🔑 Increasing pressure, concentration, or temperature speeds up the reaction.
🔄 Decreasing pressure, concentration, or temperature slows down the reaction.
📈📉 Changes in concentration directly affect the reaction rate.
00:03:09 Le Chatelier's principle explains how changes in concentration affect the equilibrium of a reaction. Decreasing hydrogen concentration favors the reverse reaction, increasing nitrogen and decreasing NH3. Overall rate decreases with decreased concentration, pressure, or temperature.
🧪 According to Le Chatelier's principle, decreasing the concentration of hydrogen causes the system to favor the reverse reaction, resulting in an increase in nitrogen and a decrease in ammonia (NH3).
⏳ When analyzing the rate graph, it is observed that the overall rate decreases when the concentration, pressure, or temperature is reduced.
📉 The changes in concentration and rate depicted in the graphs showcase the impact of Le Chatelier's principle on the equilibrium of the chemical reaction.
00:04:11 Concentration affects the equilibrium position. When concentration decreases, both reactions slow down, but the forward reaction slows down the most.
🔑 In the equilibrium graph for concentration, decreasing the concentration favors the reverse reaction and slows down the forward reaction.
📉 The forward reaction slows down the most when the concentration decreases.
00:05:16 Two ways to change equilibrium and the system's reaction shown on a graph. Grade 12: Concentration.
Decreasing a variable affects the equilibrium system the most.
Two different ways to change the equilibrium system.
Graphical representation of the system's reaction to changes in equilibrium.
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