When heated, magnesium combines readily with excess oxygen in the air to produce magnesium oxide, as shown in the following unba
1 answer:
<u>Answer:</u> The given chemical reaction can be classified as synthesis and exothermic.
<u>Explanation:</u>
A synthesis reaction is defined as the reaction where two small chemical species combine in their elemental state to form a single large chemical species.
Exothermic reactions are defined as the reactions in which heat is released by the reaction. The heat is written on the product side of the reaction.
For the given chemical reaction:
The above chemical reaction is a type of synthesis and exothermic as two substances in their elemental state are combining. Also, heat is getting released in the reaction.
Hence, the given chemical reaction can be classified as synthesis and exothermic.
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This is an incomplete question, here is a complete question.
For the net reaction: 2AB + 2C → A2 + 2BC, the following slow first steps have been proposed.
(1) AB → A + B
(2) 2C + AB → AC + BC
(3) 2AB → A₂ + 2B
(4) C + AB → BC + A
What rate law is predicted by each of these steps?
Answer : The rate law expression for the following reactions are:
(1)
(2)
(3)
(4)
Explanation :
Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.
The general reaction is:
The general rate law expression for the reaction is:
where,
a = order with respect to A
b = order with respect to B
R = rate law
k = rate constant
and
= concentration of A and B reactant
Now we have to determine the rate law for the given reaction.
(1) The balanced equations will be:
In this reaction, is the reactant.
The rate law expression for the reaction is:
(2) The balanced equations will be:
In this reaction, and
are the reactants.
The rate law expression for the reaction is:
(3) The balanced equations will be:
In this reaction, is the reactant.
The rate law expression for the reaction is:
(4) The balanced equations will be:
In this reaction, and
are the reactants.
The rate law expression for the reaction is:
This problem is providing information about a reaction between magnesium and hydrochloric acid. However, the moles of the latter are required given 50 cm³ of a 0.2-M solution, making this problem more about the application of molarity. At the end, the answer turns out to be 0.01 mol.
<h3>Molarity:</h3>In chemistry, we use units of concentration in order to represent the relative amounts of solute and solvent in a solution. More specifically, molarity relates the moles of the solute with the liters of solution according to:
Thus, since this problem asks for the moles of hydrochloric acid in 50 cm³ of a 0.2-M solution, we must first calculate the volume in liters with:
To finally solve for n, moles, to obtain:
Learn more about molarity: brainly.com/question/9468209