Consider the reaction between H₂PO4 and NH, to produce (NH4)₂HPO4. The molar mass of H₂PO4 is 97.9937 g, (NH4)2HPO4 is 132.06 g, and NH, is 17.0307 g. (a) What mass of ammonia would have to be added to 40.9 g of phosphoric acid if ammonia is required in 23% excess? 49 17.5 X 9 (b) What is the theoretical yield of (NH4)₂HPO4 under the conditions given in Part (a)? 955.118 x g

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.