Step 2: Pour Acid & Clean Copper
1. Pour about 11 oz. muriatic acid (25% hydrochloric acid) into a glass jar, its color should be clear.
2. Carefully place the cooled piece of oxizided copper into the jar, it will change the acid a yellow-green color.
3. Place the copper into a bowl of water to clean it, set the acid aside.
2. Carefully place the cooled piece of oxizided copper into the jar, it will change the acid a yellow-green color.
3. Place the copper into a bowl of water to clean it, set the acid aside.
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