Question

Nitrogen (N), phosphorus (P), and potassium (K) are the main nutrients in plant fertilizers. By industry convention, the numbers on a label refer to the mass percents of N, P₂O₅, and K₂O, in that order. Calculate the N/P/K ratio of a 30/10/10 fertilizer in terms of moles of each element, and express it as x/y/1.0.

Answer 1

The ratio is  1.07 : 0.128 : 0.106.

What is N/P/K ratio ?

These three numbers form what is called the fertilizer's N-P-K ratio — the proportion of three plant nutrients in order: nitrogen (N), phosphorus (P) and potassium (K). The product's N-P-K numbers reflect each nutrient's percentage by weight.

Given, mass ratio of (Molar mass of N2 =28; Molar mass of PO=78; Molar mass of K2O)=94) is 30/10/10

Therefore the ratio is : 30/28 : 10/78 : 10/94 = 1.07 : 0.128 : 0.106

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