Source: Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0 Source:Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0 Source:Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0 Source:Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0 Source:Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0 Source:Sörensen; in Hayat, 1986.
---- 0.2 M Monobasic Stock
Combine
13.9 g sodium phosphate monobasic
500 mL dH20
0.2 M Dibasic Stock
Combine
53.65 g sodium phosphate dibasic heptahydrate (or 28.4 g of the anhydrous form)
1 L dH20
0.1 M Buffer
To make buffer, combine the following quantities of each stock and add dH2O to bring up to 600 ml:
monobasic dibasic pH(ml) (ml) 280.5 19.5 5.7 276 24 5.8 270 30 5.9 263.1 36.9 6.0 255 45 6.1 244.5 55.5 6.2 232.5 67.5 6.3 220.5 79.5 6.4 205.5 94.5 6.5 187.5 112.5 6.6 169.5 130.5 6.7 153 147 6.8 135 165 6.9 117 183 7.0 99 201 7.1 84 2167.2 69 231 7.3 57 243 7.4 48 252 7.5 39 261 7.6 31.5 271.5 7.7 25.5 274.5 7.8 21 279 7.9 15.9 284.1 8.0
If the acid was 100% phosphoric acid I would pour 4 ml into an empty and at least 150 ml beaker. Then I would carefully measure, by graduated cylinder or from a buret, 96 ml to put into the beaker with the 4 ml to make 100 ml of solution.
If you are using 85% phosphoric acid, its conc is 14.7M. Thus, (N1)(V1) = (N2)(V2) , If you want a liter of 0.1M H3PO4, then (14.7)(V1) = (0.1)(1000) V1 = 6.8 ml
get one mole of the acid and add it to solvent 1 L.
Take 1.8 mL of 85% (wt.) phosphoric acid into 1 L of water
0.7 ml of 85% phosphoric acid into 1000 mL= 0.01 M of phosphoric acid
If you are using 85% phosphoric acid, its conc is 14.7M. Thus,
(N1)(V1) = (N2)(V2) , If you want a liter of 0.1M H3PO4, then
(14.7)(V1) = (0.1)(1000)
V1 = 6.8 ml
Dissolve 0,46 g methanoic (formic) acid in 1 L water.
Mix 0,227 mL of 85 % ortho-phosphoric acid with 1 L demineralized water.
preparation of 0.1 molar nitric acid
Bromic Acid Whoever wrote the above is a terrible idiot.... H3PO3 CANNOT be bromic acid as it contains no Bromine (Br on the periodic table) It's common name would be Phosphorous acid If it were H3PO4 it would be Phosphoric acid
phosphoric acid
H3PO4 is the formula for phosphoric acid, also called orthophosphoric acid. For details see: http://en.wikipedia.org/wiki/Phosphoric_acid
Phosphoric acid
Phosphoric acid 85% is the highest purity of this type of acid available in the market. Which is most used in food grade. Phosphoric acid is in the classification of weak acids.
Bromic Acid Whoever wrote the above is a terrible idiot.... H3PO3 CANNOT be bromic acid as it contains no Bromine (Br on the periodic table) It's common name would be Phosphorous acid If it were H3PO4 it would be Phosphoric acid
I don't think so.poly phosphoric acid and phosphoric acid have same moleculer structure.http://harvestchem.iblogger.org
phosphoric acid
H3PO4 is the formula for phosphoric acid, also called orthophosphoric acid. For details see: http://en.wikipedia.org/wiki/Phosphoric_acid
Phosphoric acid
Phosphoric acid 85% is the highest purity of this type of acid available in the market. Which is most used in food grade. Phosphoric acid is in the classification of weak acids.
i think it is phosphoric is stronger but I'm not sure?
They are the same Chemical Formula. Basically the same Acid with two different names.
Don't you mean "Where did Phosphoric Acid come from?"
what is the amu of phosphoric acid
Generically, salts from phosphoric acid are "phosphates".
The molar mass of phosphoric acid is 97,99 g.