CHEM 1131 Experiment 5 Data Sheet
Phosphorus Content of Fertilizer

Questions
I. The amount of potassium in a fertilizer is given as the percentage of potash, K:0. (As with P:Os there is no K;0 in the fertilizer, but the amount of potassium in the fertilizer is equivalent to the amount of potassium you would have if you had the stated percentage by mass of K’O.) What is the formal chemical name of potash.
2. ^fertilizer contained diphosphorus pentaoxide. the diphosphoms pentaoxide would react with water to make phosphoric acid, H.1PO4. Write a balanced chemical equation for the reaction that would occur between water and diphosphorus pcntaoxidc.
3. How many moles of diphosphorus pcntaoxidc would be in a 185.0 gram sample of this compound? Show your work using dimensional analysis.
4.
How many atoms of phosphorus arc in an amount of fertilizer containing the equivalent of 68.0
grams of phosphorus? Show your work using dimensional analysis.