Determine the volume and amount of phosphine ph3 substance weighing 17g.
| December 21, 2020 | education
Let’s find the molar mass of phosphine:
M (PH3) = Ar (P) + 3Ar (H) = 31 + 3 = 34 g / mol
Let’s find the amount of phosphine substance:
n (PH3) = m (PH3) / M (PH3) = 17 g / 34 g / mol = 0.5 mol
Let us find the volume of a given amount of phosphine substance under normal conditions:
V (PH3) = Vm * n (PH3) = 22.4 L / mol * 0.5 mol = 11.2 L
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