MAKING A COPPER HYDROXIDE PRECIPITATE.wmv скачать в хорошем качестве

MAKING A COPPER HYDROXIDE PRECIPITATE.wmv

Good morning, in this video I'm going to show you how to make copper(II) hydroxide in a very simple way. Warning, sodium hydroxide which we will use is corrosive and copper hydroxide is irritant, please wear gloves during the experiment. Te raction we will perform is the following: two molecule of sodium hydroxide plus copper sulphate pentahydrate produce sodium sulphate and copper two hydroxide. Now let's get started. Put some water in a beaker or in a glass container. I'm using distilled water. Now add about eight grams of copper suphate penthydrate. Mix until they will be completely dissolved. Now take a larger container and do the same thing, adding water and four grams of sodium hydroxide. Solve them like you've already done for the copper solution, Now with a siringe take a little bit of water from the light blue solution and add it to the second one. A blue precipitate of copper (II) hydroxide is forming istantly: infact while the sodium sulphate which forms is soluble into water the copper hydroxide is not soluble at all. If you want to separate the two compounds it is necessary to philtrate the solution. And now you have copper(II) hydroxide. As you can see it is a pale blue gelatinous solid and it's used especially in organic chemistry, like fungicide and occasionally as ceramic colorant. Plaese suscribe, rate and comment.