RU_KLO
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Cobalt chloride making
From Wiki: Cobalt chloride heptahydrate can be synthesized by reacting two moles of hydrochloric acid with one mole of cobalt carbonate.
From other posts:
cobalt chloride by dissolving the hydroxide or carbonate. If it is Co(III) hydroxide, then you need to dissolve in a presence of a reducing agent such
as H2O2.
but I got no Cobalt salt, but Cobalt metal.
Can I react it with HCL directly? (H2O2 is needed?)
Heat is needed?
or need to make a salt and then HCL?
Thanks
Go SAFE, because stupidity and bad Luck exist.
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j_sum1
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Cobalt should react with HCl just fine.
An alternative scheme would be to dissolve in nitric acid, precipitate cobalt carbonate and then react that with HCl. But I see little point in this.
It would mean less HCl to evaporate off your product.
In my experience, CoCl2 is used in very small quantities. A little goes a long way. My advice would be to make a few grams and store it for later
projects.
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hodges
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Cobalt metal with react with HCl, but the reaction is very slow (days) at room temperature. And of course you need good ventilation because you don't
want a mist full of cobalt in the lab from the hydrogen bubbles during the long time the reaction is occurring.
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