Acids and Bases Overview

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What is the equilibrium constant for the autoionization of water at 25 degrees C?

10^-14 (correct)

10^-7

10^7

10^14

How does the pH scale define a solution with a reading of 7?

Neutral (correct)

Alkaline

Basic

Acidic

What does the pKa value represent?

Strength of a base

Concentration of hydronium ions

Acid dissociation constant

Strength of an acid (correct)

What is the formula to calculate the acidity constant (Ka)?

(H+)(A-)/HA = Ka Signup and view all the answers

What do conjugate acid-base pairs differ by?

One proton (H+) Signup and view all the answers

How do buffers help in aqueous solutions?

Dampen effects of strong acids and bases Signup and view all the answers

What is the chemical formed when an acid loses its proton?

Conjugate base Signup and view all the answers

In an acid dissociation, what type of solution is produced?

Solution of protons Signup and view all the answers

What is the name given to a chemical capable of acting as either a proton donor or acceptor?

Amphoteric substance Signup and view all the answers

Which type of reaction results in the formation of a basic solution?

Weak acid, strong base reaction Signup and view all the answers

What is the pH of the solution resulting from a weak acid, weak base reaction?

pH = 7 Signup and view all the answers

What is formed during an acid-base neutralization reaction?

Salt and water Signup and view all the answers

What is the main function of hydrochloric acid (HCl) found in the human stomach?

Facilitating digestion of proteins Signup and view all the answers

How does a coordination compound differ from a regular compound?

It has a central positively charged metal ion covalently bound to a ligand Signup and view all the answers

In a coordination compound, what does the coordination number refer to?

The total number of ligands attached to the metal ion Signup and view all the answers

What type of reaction occurs when two soluble salts are mixed to form an insoluble product?

Precipitation reaction Signup and view all the answers

How can you determine if a precipitation reaction will occur?

By checking if all ions are soluble according to solubility rules Signup and view all the answers

What is the purpose of oxidation numbers in chemical reactions?

To balance chemical equations and name compounds Signup and view all the answers

What is the oxidation number of oxygen in the compound OF2?

-1 Signup and view all the answers

In a neutral compound, what is the sum of all oxidation numbers?

Zero Signup and view all the answers

When predicting single displacement reactions, what determines the ability of an element to displace another?

Position in the reactivity chart Signup and view all the answers

What is the positive electrode in an electrochemical cell called?

Cathode Signup and view all the answers

What type of reaction occurs in an electrochemical cell?

Oxidation-reduction reaction Signup and view all the answers

What determines the electrical energy of an electrochemical cell?

Difference in electrochemical potentials of the electrodes Signup and view all the answers

What are the common products of a complete hydrocarbon combustion reaction?

Carbon dioxide, water, energy Signup and view all the answers