IB Chemistry HL: November 2017 Paper 2 Exam Review | IB 化学 HL：2017年11月真题解析（试卷二）

📚 IB Chemistry HL: November 2017 Paper 2 Exam Review | IB 化学 HL：2017年11月真题解析（试卷二）

The November 2017 IB Chemistry HL Paper 2 is a demanding 2-hour 15-minute assessment that integrates all major syllabus topics through data analysis, structured calculations, and extended writing. This review provides a detailed breakdown of the paper, offering worked solutions, conceptual explanations, and common pitfalls to help students prepare effectively for similar challenges.

2017 年 11 月的 IB 化学高级课程试卷二是一场强度很高的 2 小时 15 分钟的考核，通过数据分析、结构化计算和长文写作综合考查了所有主要考纲主题。本文将对试卷进行详尽拆解，提供分步解答、概念说明和常见错误解析，帮助学生有效备战类似挑战。

1. Paper 2 Structure and Topic Distribution | 试卷结构与主题分布

Paper 2 carries 95 marks and is divided into Section A (one compulsory data-based question, approximately 20 marks) and Section B (a choice of extended-response questions worth around 75 marks). The November 2017 iteration emphasized stoichiometry, energetics, kinetics, equilibrium, acid–base chemistry, redox, and organic reaction pathways, demanding a strong ability to link concepts across topics.

试卷二总分 95 分，分为 A 部分（一道必答的数据分析题，约 20 分）和 B 部分（多道延伸简答题，约 75 分）。2017 年 11 月的试卷重点考查了化学计量、能量学、动力学、平衡、酸碱化学、氧化还原和有机反应路径，要求学生具备较强的跨主题概念联系能力。

Time management is critical: students should allocate roughly 25 minutes to Section A and use the remaining time for Section B, where choosing the right questions wisely can maximize marks. A solid grasp of the Data Booklet for bond enthalpies, thermodynamic data, and standard electrode potentials was essential for success.

时间分配至关重要：建议用约 25 分钟完成 A 部分，剩余时间留给 B 部分，并在 B 部分明智选题以最大化得分。熟练掌握数据手册中的键焓、热力学数据和标准电极电势是成功的关键。

2. Section A: Data-Based Question – Dehydration of a Hydrated Salt | A 部分：数据分析题——水合盐的脱水研究

The data-based question presented a classic stoichiometry investigation: a hydrated metal sulfate, MSO₄·xH₂O, was heated to constant mass, and students had to determine the value of x and identify the metal M. The raw data included the mass of the hydrated salt (3.22 g) and the mass of the anhydrous residue (1.42 g) after heating to 250 °C.

数据分析题设置了一个经典的化学计量探究：将某种水合金属硫酸盐 MSO₄·xH₂O 加热至恒重，要求学生确定 x 的值并鉴定金属 M。原始数据包括水合盐质量 (3.22 g) 和加热至 250 °C 后的无水残留物质量 (1.42 g)。

Mass of water driven off = 3.22 – 1.42 = 1.80 g. Moles of water = 1.80 g / 18.02 g mol⁻¹ = 0.09989 mol ≈ 0.

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