Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or a reduction. (a) Mo³⁺(aq) → Mo(s) (acidic solution) (b) H₂SO₃(aq) → SO₄^2-(aq) (acidic solution) (c) NO₃^-(aq) → NO(g) (acidic solution) (d) O₂(g) → H₂O(l) (acidic solution)

검증된 단계별 안내

Identify the oxidation states of sulfur in H_2SO_3 and SO_4^{2-}.

Determine the change in oxidation state to identify if it is oxidation or reduction.

Balance the sulfur atoms on both sides of the equation.

Balance the oxygen atoms by adding H_2O molecules to the side that needs more oxygen.

Balance the hydrogen atoms by adding H^+ ions to the side that needs more hydrogen.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Half-Reactions

Half-reactions are the individual oxidation or reduction processes that occur in a redox reaction. They represent the transfer of electrons, with oxidation involving the loss of electrons and reduction involving the gain of electrons. Balancing half-reactions is essential for understanding the overall redox process and ensuring that the number of electrons lost equals the number gained.

Oxidation and Reduction

Oxidation is defined as the process where a substance loses electrons, resulting in an increase in oxidation state, while reduction is the gain of electrons, leading to a decrease in oxidation state. In redox reactions, one species is oxidized and another is reduced, and identifying these processes is crucial for balancing chemical equations and understanding reaction mechanisms.

Balancing Redox Reactions in Acidic Solution

When balancing redox reactions in acidic solutions, it is important to account for hydrogen ions (H+) and water (H2O) to ensure mass and charge balance. The steps typically involve separating the half-reactions, balancing the atoms other than O and H, then balancing O with H2O and H with H+. Finally, the charges are balanced by adding electrons, which helps in determining the overall balanced equation.

Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or a reduction. (a) Mo3+(aq) → Mo(s) (acidic solution) (b) H2SO3(aq) → SO42-(aq) (acidic solution) (c) NO3-(aq) → NO(g) (acidic solution) (d) O2(g) → H2O(l) (acidic solution)

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Half-Reactions

Oxidation and Reduction

Balancing Redox Reactions in Acidic Solution