Preparation of Tetraamminecopper(II) sulphate monohydrate

This Video demonstrates the preparation of Tetraamminecopper (II) sulphate monohydrate complex in a way to get beautiful crystalline product at the end. The preparation is a part of undergraduate chemistry practicals in University of Delhi and most of the other Universities of India.

[@MahendraSingh-xv9yz]

mam today i am so so happy, after trying your procedure my copper sulfate crystals are also formed just like your crystal. my teacher also appreciated after the result when i showed her

[@MahendraSingh-xv9yz]

thank you thank you so much mam

[@glennkrieger]

Terrific and clear video. Great job!!

[@dr.manishagupta9336]

Thanks

[@manishajain1974]

Thanks

[@nasiir786]

Very nicely Explained Mam. Thanks A Lot.

[@aakash9813]

Thankyou so so so much ma'am its been so informative experiment along with viva question which might be asked .

[@aakash9813]

I have revised my whole experiment procedure again by watching this.🙇‍♂️

[@BhanuPratap-dh2im]

Very nicely explained

[@raconteur_19]

Thank you ❣️ mam ☺️

[@twinkle1548]

Wow mam that was tooo good

[@manishajain1974]

Glad you liked it

[@twinkle1548]

Mam yiu nailed it

[@manishajain1974]

Glad you liked it

[@shaileshkumar35]

Thank you ma'am

[@aanchalguptaakaira866]

Helps a lot

[@nishantmudgal4434]

Hello Mam, is it necessary to add Conc. H2SO4 to the copper sulphate solution just before adding Ammonia?

[@manishajain1974]

Nishant.... Addition of dilute (not conc.) sulphuric acid to aqueous copper sulphate solution is required to prevent hydrolysis of cupric ions especially if the solution is to be left at resting for longer times.
However in this preparation one doesn't need to add acid for two reasons....1) we are using the aqueous solution of copper immediately in this preparation. In that small time, hydrolysis of cupric ions doesn't take place
2) Ammonia is being added as ligand. If acid is present, a large amount might be used to neutralize the acid first before the actual complexation reaction begins. This may result in use of too much ammonia and unnecessary dilution of the reaction mixture. Dilution may lead to reduced precipitation of product thus decreasing the yield

[@nishantmudgal4434]

​@@manishajain1974 Thankyou mam, Thankyou so much... Means a lot to me😊

[@muhammadtayyab4738]

Welldone mam

[@simranpreetkaur7798]

Thankyou so much for explaining so clearly

[@muhammadhabibullah317]

Yeah true

[@muhammadhabibullah317]

Nice mam

[@dr.jaslinjchristopher]

Very informative

[@Harshsharma-ey5yp]

Nice

[@somasabir9196]

Explain briefly why you would expect a colour change during the reaction process?

[@manishajain1974]

Soma, Colour changes have different reasons at different stages of the reaction. Initial blue white precipitation (observed when ammonia is added slowly) is due to precipitation of basic copper sulphate and final deep blue colour is because of the complexation process. You must have studied about electronic transitions in coordination compounds of d block elements

[@missingpatpran7291]

Thank you

[@surajprajapati7372]

We done it by cooling, not heating

[@manishajain1974]

Cooling is also a commonly employed procedure for getting the solid product. However cooling results in smaller crystal size with simultaneous precipitation of less soluble impurities also(if any) at low temperature

[@user-ux7yl2ef2h]

👍🏻

[@somasabir9196]

Why is product washed with ether,?

[@dr.manishagupta9336]

We have not washed with ether here...
Washings with ether help in removal of moisture from the product and assist in rapid drying as ether itself is highly volatile...
Unless and until it is too necessary requirement for a product to dry rapidly, one should restrict the use of ether as it is highly flammable. Being volatile, vapours spread very fast if washings are not done in fumehood....

[@somasabir9196]

@@dr.manishagupta9336 Thank you, and so lm qution what is the hybredayzation and structure for Tettra ammine copper (II)sulphate monohydrate? please on send photo me

[@seemasharma-wh8yp]

19PH011

[@sanjeevtripathi5513]

Email address

[@tutor8781]

YOU SHOULD WEAR GLOVES

[@Kwork1104]

Chlna l***e