How would you prepare a 0.025M of phosphoric acid? - Answers (2025)

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

How would you prepare a 0.025M of phosphoric acid? - Answers (2025)

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