Phosphorus pentoxide is a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis: P 4 O 10 + 6 H 2 O → 4 H 3 PO 4 (–177 kJ) The reaction of water and coal at a high temperature produces a mixture of hydrogen and carbon monoxide gases. The unbalanced chemical equation is shown below. a. balance the equation above b. when 100 g of P4O10 are reacted with 200g of H2O, what is the theoretical yield of phosphoric acid? Thermodynamic properties of substances The solubility of the substances Periodic table of elements. The reaction is highly exothermic and leads to the formation of toxic fumes. As a strong base, sodium oxide also reacts with acids. Phosphorus pentoxide is the corresponding anhydride of phosphoric acid (H 3 PO 4) and will react violently with water to form phosphoric, according to the equation: P 4 O 10 + 6H 2 O → 4H 3 PO 4. This implies that "P"_2"O"_5 is actually the compound's empirical formula and that you should use "P"_4"O"_10 as its molecular formula. Phosphorus pentoxide react with sodium hydroxide to produce sodium triphosphate water. Find another reaction. Do … SO2(g) + H2O(l) → H2SO3(aq) Sulfur trioxide reacts violently with water to form a mist of sulfuric acid. Chemistry Chemical Reactions Chemical Equations. Depending on its concentration, this will have a pH around 14. Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. Sulfur dioxide reacts with water to give sulfurous acid or sulfuric(IV) acid. For example, it would react with dilute hydrochloric acid to produce sodium chloride solution. Our channel. Applications. It reacts with water to produce phosphoric acid, H 3PO 4, in an exothermic reaction. Answer to Phosphoric acid, H3PO4, can be prepared by the reaction of phosphorus(V) oxide, P4O10, with water. This mixture is known as synthesis gas (or syngas). The dehydration of phosphoric acid to give phosphorus pentoxide is not possible as on heating metaphosphoric acid will boil without losing all its water. Now, diphosphorus pentoxide reacts violently with water to form phosphoric acid, "H"_3"PO"_4. It reacts with oxygen to produce P4O10 and SO2. 17N.2.sl.TZ0.2c: State an equation for the reaction of phosphorus (V) oxide, P4O10 (s), with water. c. If the actual yield is 126.24g of H3PO4, what is the percent yield for this reaction? P 4O 10(s) + 6H 2O ( ) → 4H 3PO 4(aq) ∆H˚ rxn =−257.2 kJ (a) Rewrite the thermochemical equation, including the enthalpy change as a heat term in the equation. Phosphorus(V) oxide reacts with water to form phosphoric(V) acid. 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