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Dissolution of insoluble copper in sulfuric acid, using nitric acid as a catalyst! Help develop the channel: Sberbank card: 4276 4000 6876 4092 Contact the author: Email: [email protected] Telegram: https://t.me/Pirroxim Rutube: https://rutube.ru/channel/39285211/ ZEN: https://dzen.ru/id/66ad387a10e3722c6d... VK Video: https://vk.com/club226927521 Electrolysis with a soluble bronze anode Electrolytic refining of copper Reduction of tin oxide and tin acid with carbon Reduction of tin oxide and tin acid with hydrogen Separation of bronze into copper and tin refining