Draw the products of the following reactions. Use curved arrows to show where the pair of electrons starts and where it ends up.
a.
b.

검증된 단계별 안내

Step 1: Analyze the reaction (i) ZnBr₂ + H₂O. ZnBr₂ is a Lewis acid because Zn has an incomplete octet, and H₂O is a Lewis base due to the lone pairs on oxygen. The reaction involves the donation of a lone pair of electrons from H₂O to ZnBr₂.

Step 2: Use curved arrows to show the movement of electrons in reaction (i). Draw an arrow starting from one of the lone pairs on the oxygen atom of H₂O and pointing toward the Zn atom in ZnBr₂, indicating the formation of a coordinate covalent bond.

Step 3: Predict the product of reaction (i). The product will be a complex where ZnBr₂ is bonded to H₂O through the oxygen atom. Represent this as [ZnBr₂(H₂O)] with the oxygen atom donating its lone pair to Zn.

Step 4: Analyze the reaction (ii) FeCl₃ + Cl⁻. FeCl₃ is a Lewis acid because Fe has an incomplete octet, and Cl⁻ is a Lewis base due to its negative charge and lone pairs. The reaction involves the donation of a lone pair of electrons from Cl⁻ to Fe in FeCl₃.

Step 5: Use curved arrows to show the movement of electrons in reaction (ii). Draw an arrow starting from one of the lone pairs on Cl⁻ and pointing toward the Fe atom in FeCl₃, indicating the formation of a coordinate covalent bond. The product will be a complex represented as [FeCl₄]⁻, where Fe is bonded to four Cl atoms.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

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

Curved Arrows in Organic Chemistry

Curved arrows are used to represent the movement of electron pairs during chemical reactions. The tail of the arrow indicates the starting point of the electrons, while the head shows where they are moving. This notation helps visualize mechanisms, including nucleophilic attacks and bond formations or breakages, which are crucial for understanding reaction pathways.

Lewis Acids and Bases

In organic chemistry, Lewis acids are electron pair acceptors, while Lewis bases are electron pair donors. In the reactions shown, ZnBr2 acts as a Lewis acid by accepting electron pairs from water, while FeCl3 accepts electrons from the chloride ion. Understanding these roles is essential for predicting the products of reactions and the stability of intermediates.

Electrophiles and Nucleophiles

Electrophiles are species that seek electrons and are typically positively charged or neutral with an electron-deficient atom, while nucleophiles are electron-rich species that donate electron pairs. In the given reactions, ZnBr2 and FeCl3 serve as electrophiles, reacting with nucleophiles like water and chloride ions, respectively. Recognizing these roles is vital for analyzing reaction mechanisms and predicting outcomes.

Draw the products of the following reactions. Use curved arrows to show where the pair of electrons starts and where it ends up. a. b.