Maxwell | Boltzmann Distribution Pogil Answer Key Extension Questions !!install!!
distribution with a higher average speed compared to heavier gases. Area Under the Curve: This represents the total number of particles
Understanding the Maxwell-Boltzmann Distribution: A Guide to POGIL Extension Questions
f(v)=4π(M2πRT)3/2v2e−Mv22RTf of v equals 4 pi open paren the fraction with numerator cap M and denominator 2 pi cap R cap T end-fraction close paren raised to the 3 / 2 power v squared e raised to the negative the fraction with numerator cap M v squared and denominator 2 cap R cap T end-fraction power Analyzing the Mathematical Components
POGIL extension prompts often ask students to break down how different parts of this equation control the shape of the graph: The Pre-exponential Term ( v2v squared distribution with a higher average speed compared to
) on the distribution curve and explain how a catalyst alters the graph. Without a Catalyst: Only the particles to the right of the Eacap E sub a
At the same temperature, compare the M-B distribution for ( Cl_2 ) (M=70 g/mol) and ( Cl ) (M=35 g/mol). Which has a higher fraction of molecules exceeding a given velocity ( v )?
, increasing the total area (number of particles) that can successfully react. Key Concepts for Solving Extension Problems Which has a higher fraction of molecules exceeding
vrms=3RTMv sub r m s end-sub equals the square root of the fraction with numerator 3 cap R cap T and denominator cap M end-fraction end-root Ensure your molar mass ( ) is converted to kilograms per mole ( kg/molkg/mol Use the gas constant 2. Activation Energy and Catalysis
Since POGIL is a proprietary pedagogy designed for classroom collaboration, "official" answer keys are usually restricted to instructors. However, if you are stuck on a specific extension problem: Ensure and mass is in kilograms (not grams) when calculating Vrmscap V sub r m s end-sub
) must decrease to keep the equation balanced. This explains why heavy gases "clump" at lower speeds on the graph. The Role of Activation Energy Activation Energy and Catalysis Since POGIL is a
Increasing the temperature of a gas sample has a predictable and profound effect on the Maxwell-Boltzmann distribution curve:
When temperature increases, the curve flattens and stretches to the right. While the peak ( vmpv sub m p end-sub ) shifts only slightly, the exponential tail past the Eacap E sub a
“How does the addition of a heterogeneous catalyst alter the shape of the Maxwell-Boltzmann distribution curve? Explain your reasoning.”
Extension questions are designed to challenge your critical thinking by forcing you to apply the graph's visual data to algebraic, kinetic, and thermodynamic scenarios. Below are the detailed breakdowns and conceptual answers to the most common extension topics.