The rate in a rate expression represents the speed at which the reaction occurs.
True
In a chemical equation, the starting substances are called reactants
The general form of a rate expression is Rate = k[A]^m[B]^n.
In a chemical equation, the new substances formed are called products
The order of reaction with respect to each reactant is indicated by its exponent
The order of reaction with respect to each reactant is determined experimentally
The rate expression for a reaction A + B → Products is given by Rate = k[A]^m[B]^n, where m and n are the orders
Match the overall order with its corresponding rate dependence:
Zero order ↔️ Rate is independent of reactant concentrations
First order ↔️ Rate is directly proportional to [A]
Second order ↔️ Rate is proportional to [A]² or [A][B]
What are the orders of reaction with respect to hydrogen and iodine in the reaction H₂ + I₂ → 2HI?
1 and 1
What are the reactants in the chemical equation 2H₂ + O₂ → 2H₂O?
H₂ and O₂
In a zero-order reaction, the rate is independent of the reactant's concentration
The general rate expression is Rate = k[A]^m[B]^n, where m and n represent the orders of reaction with respect to [A]
The overall order of reaction is the sum of the individual orders with respect to each reactant
The empirical rate expression is determined experimentally
In the rate expression, k represents the rate constant
The rate constant is influenced by the reaction mechanism, temperature, and the presence of catalysts
The rate constant (k) is influenced by temperature and catalysts.
True
The rate constant (k) changes with reactant concentrations.
False
Order the components of a rate expression from simplest to most complex:
1️⃣ Reactant concentrations
2️⃣ Rate constant
3️⃣ Reaction orders
4️⃣ Rate
The rate expression for the reaction H₂ + I₂ → 2HI is Rate = k[H₂][I₂], where m = 1 and n = 1, indicating the reaction is first order with respect to both hydrogen and iodine.
Match the term with its effect on reaction rate:
Zero Order ↔️ Rate independent of concentration
First Order ↔️ Rate directly proportional to concentration
Second Order ↔️ Rate increases by square of concentration
The order of reaction with respect to each reactant describes how the concentration of a reactant affects the rate of the reaction.
In a first-order reaction, the rate is directly proportional to the concentration
The overall order of reaction is the sum of the individual orders with respect to each reactant
What is the rate expression for the reaction 2NO + O₂ → 2NO₂?
Rate = k[NO]²[O₂]
What could be the empirical rate expression for the reaction 2N₂O₅ → 4NO₂ + O₂?
Rate = k[N₂O₅]
Given k = 0.05 M⁻²s⁻¹, [A] = 0.2 M, [B] = 0.3 M, m = 1, and n = 2, what is the rate of the reaction?
0.0009 M/s
The rate constant k is influenced by temperature and catalysts
What is the mathematical equation that describes how the rate of a chemical reaction depends on reactant concentrations called?
Rate Expression
Match the term with its definition:
Rate ↔️ Speed of the reaction
k ↔️ Rate constant
[A], [B] ↔️ Concentrations of reactants
m, n ↔️ Orders of reaction
Reactants are found on the left side of the arrow in a chemical equation.
True
Match the term with its definition:
Rate ↔️ Speed of the reaction
k ↔️ Rate constant
[A], [B] ↔️ Concentrations of reactants
m, n ↔️ Orders of reaction
Products are found on the right side of the arrow in a chemical equation.
True
Match the order of reaction with its effect on rate:
Zero Order ↔️ Rate independent of concentration
First Order ↔️ Rate directly proportional to concentration
Second Order ↔️ Rate increases by the square of concentration
In a zero-order reaction, the rate is independent of the reactant's concentration.
True
Arrange the reactions in order based on their overall reaction orders, from lowest to highest: