I need help to compute this question: Standard molar enthalpy of formation of NH3 is -45.9 Kj/mol. What is the enthalpy change of 5.38g N2 and 3.32g H2 react to produce NH3? You must have a balanced equation. What is the standard enthalpy of formation for N2O4?
The enthalpy change of a reaction depends on the physical state of the reactants and products of the reaction (whether we have gases, liquids, solids, or aqueous solutions), so these must be shown. For example, when 1 mole of hydrogen gas and 1212 mole of oxygen gas change to 1 mole...
I need help to compute this question: Standard molar enthalpy of formation of NH3 is -45.9 Kj/mol. What is the enthalpy change of 5.38g N2 and 3.32g H2 react to produce NH3? You must have a balanced equation. Calculate the enthalpy change for the following eq...
That model is extended allowing on the one side for the formation of pyrosulfite, and on the other side for the description of experimental results for the enthalpy change upon dilution (in pure water) of (NH 3 + H 2 O) (taken from the literature), as well as (SO 2 + H 2 O) ...
We already know that standard heat or enthalpy of formation of a substance is the heat change in forming one mole of the compound from its element in their standard states. Thus in the reaction the enthalpy of formation 2 mole of NH3 is 92kJ. Therefore the standard DH of formation = 92...
enthalpy change for reaction (c). Is reaction (c) endothermic or exothermic at thistemperature?(a) 3H2(g) + N2(g) = 2NH3(g) H = −92.4 kJ mol−1(b) 2H2(g) + O2(g) = 2H2O(g) H = −483 kJ mol−1(c) 4NH3(g) + 3O2(g) =2N2(g) + 6H2OReaction (c) is ...
Does bond enthalpy = enthalpy of formation?Bond Enthalpy and Enthalpy of formation:Bond enthalpy is defined for a bond between two atoms. The energy required to break the bond between two atoms is known as the bond enthalpy, and the enthalpy of formation of a compound is the energy change ...
When en is added to [Ni(NH3)6]2 +, ammonia will be displaced with the concomitant formation of [Ni(en)3]2 +. In some cases, not all possible donor atoms are coordinated to a metal center, and there has been much recent interest in complexes containing hypodentate ligands,16 for ...
1.The chill effect is found to depends upon the enthalpy change of the base materials and coating depth.焓变涂料激冷作用的大小,取决于基料物质比焓变的大小以及涂层厚度等因素. 2.The key to calculate the specific enthalpy and enthalpy difference is to make sure of the benchmark as well as the...
Label the activation enthalpy and the change in enthalpy ΔH on the diagram. Exothermic Reaction: A chemical reaction that releases energy is known as an exothermic reaction. This release of energy can either be in the form of heat or light ...