Posted by: Kang Huda | May 28, 2008

General reagents

Did you know the reagent instruction…..

                                                     General reagents

Ammonium acetate.
Dissolve 231 g of the salt in 1 liter of water. (3M)
Ammonium carbonate.
The commercial salt is a mixture of bicarbonate and carbamate. Dissolve 192 g of the salt in a mixture of 140ml conc. ammonia solution and water to make up 1 liter of solution. (2M)
Ammonium chloride
dissolve 169 g of the salt in 1 liter of solution (3M).
Ammonium nitrate
dissolve 80 g of the salt in 1 liter of water. (1M)
Ammonium oxalate
dissolve 71 g of the crystaline salt in 1 liter of water.(0.5M)
Ammonium sulphate
dissolve 132 g of the salt in 1 liter of water.(1M)
Ammonium sulphide
use the yellow commercial product
Ammonium thiocyanate
Dissolve38 g of the salt in 1 liter of water (0.5M)
Barium chloride
dissolve 61 g of the salt in 1liter of water.(0.25M)
Bismuth chloride
dissolve 53 g of the salt in a solution of 800mls water and 200mls conc. HCl.(0.17M)
Bismuth nitrate
dissolve 40g of the salt in 800mls water and 200mls conc. nitric acid.(0.08M)
Bromine water
a saturated aqueous solution is prepared by shaking 35g or 11ml liquid bromine with 100ml water. Add more bromine if necessary to a slight excess.
Calcium chloride
dissolve 55 g of the hydrated salt in 1 liter of water (0.25M)
Calcium sulphate
shake 3 g of the salt with 1 liter of water, filter and decant the saturatrd solution after several hours (0.015M)
Chlorine water
saturate 250ml of water with chlorine. The chlorine may be prepared by dropping conc. HCl upon KmnO4. Preserve in a dark coloured bottle.(6.8g/l)
Cobalt nitrate
dissolve 44 g of the salt in 1 liter of water. (0.15M)
Copper sulphate
dissolve 125 g of the salt in 1 liter of water, and add 5mls of conc. Sulphuric acid.(0.5M)
Ferric chloride
dissolve 135 g of the hydrated salt in 1 liter of water containing 20mls of conc. HCl (0.5M)
Ferrous sulphate
dissolve 140 g of the salt in 1 liter of water, containing 7 ml of conc. Sulphuric acid (0.5M)
Hydrogen sulphide
H2S generated from a Kipps apparatus ( ~42g/l)
Iodine solution
dissolve 12.7 g of iodine in a solution of 20g of pure KI in 30 ml of water, and dilute to 1 liter with water.(0.05m)
Lead acetate
dissolve 95 g of the salt in 1 liter of water (0.25M)
Lime water
saturate 2 g of Ca(OH)2 in 1 liter of water. Filter and protect ffom CO2 of the air. (0.02M)
Magnesium sulphate
dissolve 62 g of the salt in 1 liter of water (0.25M)
Magneson (4-(4-nitrophenylazo) resorcinol
0.001% in 1M NaOH.
Mercuric chloride
dissolve 27 g of the salt in 1 liter of water (0.1M)
Mercurous nitrate
dissolve 25g of the salt in 500ml water and add 25mls conc. nitric acid.
Potassium antimonate
make a solution of 22 g of the salt in 1liter of water, boil to almost fully dissolved, cool immediately and add 35ml of 10% KI. Leave overnight, then filter.(0.25M)
Potassium chromate
dissolve 49g of the salt in 1 liter of water (0.25M)
Potassium ferricyanide
dissolve 55 g of the salt in 1 liter of water (0.25M)
Potassium ferrocyanide
dissolve 53 g of the salt in 1 liter of water (0.125M)
Potassium iodide
dissolve 83 g of the salt in 1 liter of water (0.5M)
Potassium permanganate
dissolve 3.2g of the salt in hot water, dilute to 1 liter, and filter through glass wool (0.01M)
Potassium thiocyanate
dissolve 49g of the salt in 1 liter of water (0.25M)
Silver nitrate
dissolve 17g of the salt in 1 liter of water (0.1M)
Silver sulphate
dissolve 8g of the salt in 1 liter of water. this is nearly a saturated solution (0.025M)
Sodium acetate
dissolve 408g of the crystaline salt in 1 liter of water (3M)
Sodium carbonate
dissolve 430g of the crystaline salt in 1 liter of water (1.5M)
Sodium cobaltinitrite
1. dissolve 25g of NaNO2 in 75 ml water, add 2ml glacial acetic acid and then 2.5gm of Co(NO3.6H2O. Allow to stand for a few days, filter and dilute to 100ml. (0.08M)
2. dissolve 17g of the pure salt in 250ml water.
Disodium hydrogen phosphate
dissolve 120g of the salt in 1 liter of water 0.34M)
Stannous chloride
dissolve with heat 56g of the salt in 100ml conc. HCl and dilute to 1 liter. Keep a few pieces of granulated zinc in the stored solution to avoid oxidation. (0.25M)
Thiourea
dissolve 10g in 100ml of water (10%)
Titan yellow
dissolve 1g in 100ml of water (1%)
Zinc nitrate
dissolve 150g of the salt in 1 liter of water (0.5M)


 


Responses

  1. you can try alkaline-ionized water with no wastes and no electicity, just like natural processes


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