Side Bench Reagents

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Contents

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)

Bromine water

a saturated aqueous solution is prepared by shaking 35g or 11ml liquid bromine with 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 containing 3ml of conc. Sulphuric acid.(0.5M)

Ferric chloride

dissolve 135 g of the hydrated salt in 1 liter of water containing 20ml 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)

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)

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)

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

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)

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