manzoorvbc Posts: 2, Reputation: 1 New Member #1 Aug 12, 2010, 10:56 PM
I want to calculate 50 ppm from available chemical CuSo4 in the market, how can I
I have to add 50 ppm in a certain test reagent and have laboratory grade CuSo4 (hydated) with me. How much CuSo4 I have to take which will contain 50 ppm of Copper. Pl teach me the basics of the calculation so that I can use the same principle in other calculations (for other materials) also. Thanks
 Unknown008 Posts: 8,076, Reputation: 723 Uber Member #2 Aug 14, 2010, 11:24 AM
You first need to know what mass of the salt is copper.

Relative mass of copper = 63.5
Relative mass of copper sulfate pentahydrate = 63.5 + 32 + 64 + (18 x 5) = 249.5

% Mass of copper = (63.5 / 249.5) x 100% = 25.45 %

50 ppm is 50 mg per litre. So, you need 50 mg of copper ion in 1 litre.
Now, you can use proportions!
If 25.45% represent 50 mg,
100% would be (50/25.45)x100 = 196.46 mg = 196.5 mg = 0.197 g

So, you need 0.197 g of copper sulfate pentahydrate crystals in 1 litre of solution.

 Question Tools Search this Question Search this Question: Advanced Search

## Check out some similar questions!

How can I calculate total hardness in ppm CaCO3? [ 5 Answers ]

35.0mL sample of water is titrated with 0.0100M EDTA. Exactly 9.70mL of EDTA are required to reach the EBT endpoint. How can I calculate total hardness in ppm CaCO3? Please Please help, any equation? Thanks

Cuso4+h2so4+h2o [ 1 Answers ]

What is the reaction of CuSO4+H2SO4+H2O

In applying the lower of cost or market method to inventory valuation, market is defined as

Consider a price-weighted market index composed of two securities, A and B, with prices of \$16 and \$30, respectively. The index divisor is currently 2.0. Calculate the value of the divisor if a. Stock A issues a 5% stock dividend b. Stock B undergoes a 3-for-1 stock split c. Stock A...