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2025年高考高中化学方程式配平经典题目 果断收藏
Fe2O3 + CO——Fe + CO2 所以,1个Fe2O3应将3个“O”分别给3个CO,使其转变为3个CO2。即 Fe2O3 + 3CO——Fe + 3CO2 再观察上式:左边有2个Fe(Fe2O3),所以右边Fe的系数应为2。即 Fe2O3 + 3CO ==2Fe + 3CO2 这样就得到配平的化学方程式了,注意将“——”线变成“==”号。即 Fe2O3 ...
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