In several reactions a colour change indicates the formation of new products. For example, green copper carbonate reacts, when heated, to form black copper oxide and carbon dioxide gas.
在一些反应中颜色会发生变化，它表明产生了新的物质，例如，绿色的碳酸铜在加热时会分解为黑色的氧化铜和二氧化碳气体。
Photopromoted carbonylation of chloroalkanes with carbon monoxide and carbon dioxide was catalyzed by copper salts and carried out under mild conditions.
研究了光促进温和条件下，非贵金属铜盐催化氯代烷烃的羰基化反应。
This paper describes a method of ion flotation for separating cobalt, nickel and copper from a solution of manganese ore leached with sulphur dioxide.
本文叙述从二氧化硫浸出锰矿溶液中分离钴、镍、铜的离子浮选方法。
Selective leaching of nickel, cobalt and copper from cobalt crusts was attained by using ammonium carbonate solution and sulfur dioxide gas as a reductant.
二氧化硫作还原剂，用碳酸铵溶液可实现从钴壳中选择性浸出镍、钴和铜。
Selective leaching of nickel, cobalt and copper from cobalt crusts was attained by using ammonium carbonate solution and sulfur dioxide gas as a reductant.
二氧化硫作还原剂，用碳酸铵溶液可实现从钴壳中选择性浸出镍、钴和铜。
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