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Introduction to Non-Oxidizing Acids; General Reaction Principles; Metal Reactivity Series; Specific Acid Reactions; Applications and Safety

Reactions of Non-Oxidizing Acids

Chemistry

Reactions of Non-Oxidizing Acids

Understanding how these acids react with metals.

Agenda

• Introduction to Non-Oxidizing Acids

• General Reaction Principles

• Metal Reactivity Series

• Specific Acid Reactions

• Applications and Safety

Non-Oxidizing Acids: Introduction

Non-oxidizing acids react primarily by displacing hydrogen from less reactive metals, rather than by accepting electrons through oxidation. This fundamental characteristic distinguishes their chemical behavior from oxidizing acids.

Non-oxidizing acids displace hydrogen from metals.

Ammonia reacts with hydrochloric acid, producing vapors.

Common Non-Oxidizing Acids

• Hydrochloric Acid (HCl) is a strong acid.

• Dilute Sulfuric Acid (H₂SO₄) is also non-oxidizing.

• These acids react via proton donation.

• They do not oxidize other substances.

General Reaction Principle

Non-oxidizing acids react with metals above hydrogen in the reactivity series. This fundamental reaction yields a salt and hydrogen gas (Acid + Metal → Salt + Hydrogen). For example, HCl reacts with Mg to form MgCl₂ and H₂.

Redox reaction: simultaneous oxidation and reduction.

Redox Reaction Fundamentals

• Redox: Oxidation and reduction occur simultaneously.

• Non-oxidizing acids react with metals.

• Metals are oxidized; hydrogen ions are reduced.

• Electron transfer is the core process.

Hydrogen Displacement Explained

Active metals displace hydrogen ions from non-oxidizing acids, forming a salt and hydrogen gas. This redox reaction occurs because the metal is more reactive than hydrogen. For example, zinc reacts with hydrochloric acid.

Hydrochloric Acid Reactions

Magnesium reacts with hydrochloric acid, a non-oxidizing agent. This forms magnesium chloride and hydrogen gas, demonstrating a single displacement reaction.

Products: Magnesium Chloride

• Magnesium reacts with hydrochloric acid.

• Forms magnesium chloride (salt).

• Hydrogen gas is evolved.

• Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)

Reactions of Non-Oxidizing Acids

Introduction to Non-Oxidizing Acids; General Reaction Principles; Metal Reactivity Series; Specific Acid Reactions; Applications and Safety

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