Respuesta :
Water, H2O, and liquid phosphorus trichloride, PCl3, react quickly and exothermically. The reaction then produces aqueous hydrochloric acid (HCl) and aqueous phosphorous acid (H3PO3(aq)) (aq). Following is the balanced chemical reaction: PCl3 + 3 H2O H3PO3 + 3 HCl. Phosphorous acid, one of its byproducts, is a crucial precursor in the production of other phosphorous compounds.
yield of a reaction is 80.17%.
Chemical reaction: PCl₃ + 3H₂O → 3HCl + H₃PO₃.
m(PCl₃) = 200 g.
m(HCl) = 128 g.
n(PCl₃) = m(PCl₃) ÷ M(PCl₃).
n(PCl₃) = 200 g ÷ 137,33 g/mol.
n(PCl₃) = 1,46 mol.
n(HCl) = m(HCl) ÷ M(HCl).
n(HCl) = 128 g ÷ 36,45 g/mol.
n(HCl) = 3.51 mol.
From reaction: n(PCl₃) : n(HCl) = 1 : 3.
n(HCl) = 1,46 mol · 3 = 4,38 mol.
Yield of reaction: 3.51 mol ÷ 4,38 mol · 100% = 80.17%.
What is Phosphorous acid?
The substance denoted by the formula H3PO3 is phosphoric acid, often known as phosphonic acid (singular). Instead of being triprotic as this formula might imply, this acid is diprotic (easily ionizes two protons). An intermediary in the creation of other phosphorus compounds is phosphoric acid. Phosphonic acids are organic molecules having the formula RPO3H2 that are phosphorous acid derivatives.
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