Common Misconceptions and Correction Methods in Pre-U WJEC Chemistry | Pre-U WJEC 化学：常见误区与纠正方法

📚 Common Misconceptions and Correction Methods in Pre-U WJEC Chemistry | Pre-U WJEC 化学：常见误区与纠正方法

Pre-U WJEC Chemistry demands a deep conceptual understanding, yet many students repeatedly fall into predictable traps that undermine their performance. This article pinpoints the most frequent misconceptions across physical, inorganic and organic chemistry, and offers clear, corrective explanations to help build a truly robust foundation for exam success.

Pre-U WJEC 化学要求深刻的化学概念理解，但许多学生反复跌入可预见的误区，影响成绩。本文指出物理化学、无机化学和有机化学中最常见的错误观念，并提供清晰的纠正解释，帮助建立真正扎实的考试基础。

1. Le Chatelier’s Principle vs. Equilibrium Constant | 勒夏特列原理与平衡常数

A widespread error is believing that shifting equilibrium by altering concentration or pressure also changes the equilibrium constant, Kc or Kp. In fact, only temperature affects the value of the equilibrium constant. When a system at equilibrium is disturbed, the reaction quotient Q deviates from K, and the position of equilibrium shifts purely to restore Q = K. For the exothermic formation of ammonia, N₂(g) + 3H₂(g) ⇌ 2NH₃(g), increasing the pressure favours the forward reaction, but K

Published by TutorHao | Pre-U Chemistry Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）