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5. Monitoring and controlling chemical reactions — OCR GCSE Chemistry A J248 | GradeGen.AI
Chemistry A
Monitoring and controlling chemical reactions
OCR
J248
Monitoring and controlling chemical reactions
Relate moles to solution concentration and gas volume.
Calculate mass using molarity.
Use equations to predict yield and calculate atom economy.
Understand how to alter reaction rate and yield by changing physical conditions.
Monitoring chemical reactions
Understand relationship between moles, mass, and volume.
Perform titration calculations.
Calculate theoretical yield, percentage yield, and atom economy.
Evaluate reaction pathways.
17 Subtopics
1
Standard Form with Avogadro
Revise
2
Significant Figures
Revise
3
Mass to Moles Conversion
Revise
4
Quantitative Arithmetic
Revise
5
Yield and Economy Calculations
Revise
6
Rearranging Equations
Revise
7
Concentration Relationships
Revise
8
Titration Techniques
Revise
9
Titration Calculations
Revise
10
Gas Volumes and Moles
Revise
11
Molar Gas Volume
Revise
12
Solution Concentration
Revise
13
Theoretical Mass
Revise
14
Percentage Yield
Revise
15
Atom Economy Definition
Revise
16
Calculating Atom Economy
Revise
17
Selecting Reaction Pathways
Revise
Controlling reactions
Interpret reaction rate graphs and determine gradients.
Suggest methods to determine reaction rates.
Explain factors affecting reaction rates (temperature, concentration, pressure, surface area, catalysts).
13 Subtopics
1
Rate Calculation Arithmetic
Revise
2
Rate Graphs
Revise
3
Gradients as Rate
Revise
4
Proportionality in Rates
Revise
5
Determining Reaction Rates
Revise
6
Interpreting Rate Graphs
Revise
7
Factors Affecting Rate
Revise
8
Collision Theory
Revise
9
Surface Area Effects
Revise
10
Catalysts Characteristics
Revise
11
Identifying Catalysts
Revise
12
Catalysis and Activation Energy
Revise
13
Enzymes
Revise
Equilibria
Understand reversible reactions and dynamic equilibrium in closed systems.
Predict the effect of changing conditions on equilibrium position.
7 Subtopics
1
Rate Calculation Arithmetic
Revise
2
Rate Graphs
Revise
3
Gradients as Rate
Revise
4
Proportionality in Rates
Revise
5
Reversible Reactions
Revise
6
Dynamic Equilibrium
Revise
7
Le Chatelier’s Principle
Revise
