More exercises

Organic chemistry

https://www.alipan.com/s/9iCt7uKCVjJ 提取码: 8a5k

Acids and bases and salt preparation

https://www.alipan.com/s/tQKJ5Qr1YTL 提取码: q51r

Redox, rate and equilibrium

https://www.alipan.com/s/3hU74V8ukX4 提取码: 69tc

Energetics

https://www.alipan.com/s/QwAFidEabUq. 提取码: y37x

Electrolysis

https://www.alipan.com/s/Zd8BEFwc4dY 提取码: 9du5