37. To determine the total content of heavy metals in w

In Favorites

Affiliates: 0,01 $ — how to earn

Pay with:

i agree with "Terms for Customers"

Sold: 3 last one 14.06.2020
Refunds: 0

Uploaded: 31.07.2019
Content: 37.rar 8,88 kB

Seller

ученьеСвет information about the seller and his items

offlineAsk a question

Product description

37. To determine the total content of heavy metals in water (lead, copper, cadmium, etc.), they are extracted from water as dithizonate complexes into carbon tetrachloride, then, after removing excess dithizone, it is treated with Hg (II) salt for conversion to dithizonate mercury photometry. The optical density of mercury dithizonate obtained by treating 500.00 ml of water is equal to 0.110 at λ = 485 nm. 500.00 ml of a standard solution containing 2.00 ml of Hg (NO3) 2 * 4H2O with T = 0.00001542 g / cm3 passed through all stages of the analysis, similarly to the test solution. The optical density of it was equal to 0,280.
What is the total content of heavy metals in water (mmol / dm3)?

Additional information

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.

Feedback

all positive negative

No feedback yet.

Related to item "37. To determine the total content of heavy metals in w":

30. A portion of sodium salicylate M (C7H5O3Na) = 160. 1

The Crew 2. Gold Edition (Uplay key) - - RU

In order to counter copyright infringement and property rights, we ask you to immediately inform us at support@plati.market the fact of such violations and to provide us with reliable information confirming your copyrights or rights of ownership. Email must contain your contact information (name, phone number, etc.)