Ch.13 - Chemical KineticsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: The gas NO reacts with H2, forming N2 and H2O: 2NO (g) + 2H2 (g) → 2H2O (g) + N2 (g) If Δ[NO]/Δt = -19.0 M/s under a given set of conditions, what are the rates of change of [N  2] and [H2O]? Rate of

Solution: The gas NO reacts with H2, forming N2 and H2O: 2NO (g) + 2H2 (g) → 2H2O (g) + N2 (g) If Δ[NO]/Δt = -19.0 M/s under a given set of conditions, what are the rates of change of [N  2] and [H2O]? Rate of

Problem

The gas NO reacts with H2, forming N2 and H2O: 

2NO (g) + 2H2 (g) → 2H2O (g) + N2 (g) 

If Δ[NO]/Δt = -19.0 M/s under a given set of conditions, what are the rates of change of [N  2] and [H2O]? 

Rate of change of [N2]: 

Rate of change of [H2O]:


Solution

We’re given the balanced reaction:

2 NO(g) + 2 H2(g)  2 H2O(g) + N2(g)


We’re being asked to calculate the average rate of the reaction with respect to N2 and H2O given that Δ[NO]/Δt = –19.0 M/s. Recall that the average rate of a reaction is given by:



where Δ[A] = change in concentration of reactants or products (in mol/L or M) and Δtime = change in time. We can simply do a rate-to-rate comparison based on the stoichiometric coefficients.


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