The gram formula weight of phosphoric acid is 98.00 g/mol, and the density of 85.0% phosphoric acid is 1.685 g/mL. Could you describe how...
Answer (2)
formula weight of phosphoric acid is 98.00g/mol, because: mass of H = 1g mass of O = 16g mass of P = 31g mass of H3PO4 = 3 1g + 31g + 4 16g = 98g/mol
the density of 85% phosphoric acid is 1.685g/ml, so:
85% >>> we've 85g of phosphoric acid in 100g of solution (85g of acid; 100g-85g = 15g of water)
1.685g/ml >>> we've 1.685g of phosphoric acid solution in 1ml
when we dissolve 85g of phosphoric acid in 15g of water, we obtain 85% phosphoric acid which density is 1.685g/ml
The gram formula weight of phosphoric acid (H₃PO₄) is calculated as 98 g/mol, derived from its constituent elements. The density of an 85% phosphoric acid solution is 1.685 g/mL, indicating that there are about 1.428 grams of pure phosphoric acid in 1 mL of this solution. This understanding is essential for applications involving phosphoric acid in both industrial and laboratory contexts.
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