Chemistry Chapter: Nature of Reactants

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Questions and Answers

Which type of compounds typically react faster due to their bonding?

Metallic Compounds

Ionic Compounds (correct)

Covalent Compounds

Organic Compounds

Ionic compounds require more energy to break their bonds compared to covalent compounds.

False

What effect does increasing the surface area of solid reactants have on the rate of reaction?

It increases the rate of reaction.

Covalent compounds react _____ compared to ionic compounds due to the need for energy to break their bonds.

slowly Signup and view all the answers

Match the type of compound with its reaction speed:

Ionic Compounds = React fast Covalent Compounds = React slowly Signup and view all the answers

What happens to the rate of reaction as the concentration of reactants increases?

The rate increases. Signup and view all the answers

The equilibrium constant (Kc) is dependent on the concentrations of reactants and products.

True Signup and view all the answers

What is the relationship defined by the Law of Mass Action concerning the rate of a chemical reaction?

The rate of a chemical reaction is directly proportional to the product of the concentrations of the reactants. Signup and view all the answers

At equilibrium, the rate of the forward reaction, $r_1$, is equal to the rate of the _____ reaction, $r_2$.

reverse Signup and view all the answers

Match the following variables with their corresponding meanings in the context of the equilibrium constant equation:

$K_c$ = Equilibrium constant $[NH_3]$ = Concentration of ammonia $[FeCl_3]$ = Concentration of reactant iron (III) chloride $[N_2]$ = Concentration of nitrogen gas Signup and view all the answers

What is the value of $K_c$ that favors the formation of products?

$K_c > 1$ Signup and view all the answers

Solids are included in the expressions for calculating equilibrium constants.

False Signup and view all the answers

What does a reversible reaction allow?

It allows the reaction to proceed in both forward and reverse directions. Signup and view all the answers

In the equation $AgCl(s) ightleftharpoons Ag^{+}(aq) + Cl^{-}(aq)$, AgCl is a __________.

solid Signup and view all the answers

If the stoichiometric coefficients of a balanced chemical equation are doubled, how does this affect the equilibrium constant?

The equilibrium constant is squared. Signup and view all the answers

Increase in concentration of reactants will favor the formation of products.

True Signup and view all the answers

What is the general expression for the equilibrium constant $K_c$?

K_c = \frac{\text{Conc. of products}}{\text{Conc. of reactants}} Signup and view all the answers

Match the following reactions with their equilibrium constants:

$Ag_2O(s) + 2HNO_3(aq) \rightleftharpoons 2AgNO_3(aq) + H_2O(l)$ = $K_c = \frac{[AgNO_3]^2}{[HNO_3]^2}$ $A + B \rightleftharpoons AB$ = General case for $K_c$ $2A + 2B \rightleftharpoons 2AB$ = $K_c = X $\frac{1}{2}A + \frac{1}{2}B \rightleftharpoons \frac{1}{2}AB$ = $K_c = \sqrt{X}$ Signup and view all the answers

Study Notes

Nature of Reactants

Type of bonding in the reactants:
- Ionic compounds react because the reaction takes place between ions. Those ions are ionized as soon as mixed.
- Covalent compounds react because the reaction takes place between molecules. An amount of energy is consumed to break the covalent bonds.
Surface area of reactants:
- Increasing surface area (e.g., powder form) increases the chance of collisions, thus increasing the rate of reaction.

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Description

Explore the nature of reactants in this quiz, focusing on the types of bonding and the impact of surface area on reaction rates. Understand how ionic and covalent compounds interact and learn about the factors influencing these reactions.