Project:Deactivating a ferric chloride solution: Difference between revisions
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Project:Deactivating a ferric chloride solution (view source)
Revision as of 21:01, 28 May 2010
, 28 May 2010→In practice
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* Example | * Example | ||
A solution that was made with a packet of Ferric Chloride ( | A solution that was made with a packet of Ferric Chloride (FeCl<sub>3</sub>) crystals weighing 300 grams requires 222 grams of Sodium Hydroxide (NaOH) to be deactivated. | ||
After | After deactivation, the neutralised solution will contain Iron Hydroxide (Fe(OH)<sub>3</sub>) which is rust and Sodium Chloride (NaCl) which is common table salt. | ||
Both are innocuous and can be poured down the drain. | Both are innocuous and can be poured down the drain. | ||
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discarded. | discarded. | ||
If not discarded, on standing, the Iron Hydroxide will separate out at the bottom, while at the top, a crust of Copper Carbonate ( | If not discarded, on standing, the Iron Hydroxide will separate out at the bottom, while at the top, a crust of Copper Carbonate (CuCO<sub>3</sub>) will form due to the copper from etched circuits. | ||
The Iron Hydroxide at the bottom is a standard commercial pigment and can be separated off the solution and added to latex paint. | The Iron Hydroxide at the bottom is a standard commercial pigment and can be separated off the solution and added to latex paint. | ||
