Question

Ammonium hydrogen phosphate, a common fertilizer; is made from reacting phosphoric acid with ammonia, NH3. What mass of ammonia will react with 2800 kg of H3PO4? Please show how you got the answer

Answer 1

Answer: 971.428 kg of ammonia will react with 2800 kg of phosphoric acid.

Step-by-step explanation:

Mass of sodium hydrogen carbonate in 1 tablet =2800 kg = 2,800,000 g

`H_3PO_4+ 2NH_3\rightarrow (NH_4)_2HPO_4`

Moles of
`H_3PO_4=\frac{\text{Mass of }H_3PO_4}{\text{Molar Mass of }H_3PO_4}=(2,800,000 g)/(98 g/mol)=28,571.42 moles`

According to reaction 1 mole of
`]H_3PO_4` reacts with 2 mole of
`NH_3` then 28,571.42 mole of
`H_3PO_4` will react with:
`(2)/(1)* 28,571.42` moles of
`NH_3` that is 57,142.84 moles.

Mass of
`NH_3=17 g/mol* 57,142.84 moles.=971,428.28 g=971.428 kg`

971.428 kg of ammonia will react with 2800 kg of phosphoric acid.