Question

two reactants combine to form a product in the reaction a + b → c. the rate of the reaction depends on the concentrations of both reactants squared (rate = ka^2b^2). whats the total reaction order of this reaction?
a) 4
b) 3
c) 1
d) 2
question 6 (5 points)
listen
a chemical reaction has the equation 4al (s) + 3 o₂ (g) → 2al₂o₃ (s). what type of reaction is this?
a) single displacement
b) double displacement

Explanation:

Step1: Recall the formula for reaction order

The total reaction order is the sum of the exponents of the reactant concentrations in the rate law.

Step2: Calculate the total reaction order

Given rate = \(k[A]^{2}[B]^{2}\), the exponent for \(A\) is \(2\) and for \(B\) is \(2\). So, total reaction order \(= 2 + 2\).

for the second question:

Step1: Recall the definitions of reaction types

A synthesis (combination) reaction is when two or more reactants combine to form one product. A single - displacement reaction has the form \(A+BC
ightarrow AC + B\), and a double - displacement reaction has the form \(AB + CD
ightarrow AD+CB\).

Step2: Analyze the given reaction

In the reaction \(4Al(s)+3O_{2}(g)
ightarrow2Al_{2}O_{3}(s)\), two reactants (\(Al\) and \(O_{2}\)) combine to form one product (\(Al_{2}O_{3}\)).

Answer:

A. 4