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What else can I help you with?
What is the enthalpy of ammonium chloride?
The enthalpy of formation of ammonium chloride is -315.4 kJ/mol.
If the solubility of KHT Potassium bitartrate increases with temperature increase what can you say about the sign of enthalpy change of the dissolution of KHTWhy?
If the solubility of KHT Potassium bitartrate increases with temperature, the enthalpy change of the dissolution of KHT is likely positive (endothermic). This is because an increase in solubility with temperature indicates that the dissolution process absorbs heat from the surroundings to proceed, resulting in a positive enthalpy change.
Is benzene reactive with bromine in the dark?
No, benzene is not reactive with bromine in the dark because the aromatic nature of benzene stabilizes its electron configuration. Without light or a catalyst, the reaction between benzene and bromine is not energetically favored.
What is the enthalpy of formation for sodium sulfate?
The answer to this question must be in Perry's Chemical Engineering Handbook, or the CRC Handbook of Chemistry and Physics, or the JANAF Thermochemical Tables... I just don't have mine handy right now, and I need the same answer for a homework problem. These books have the enthalpy of formation for a myriad of substances. Go to your nearest library and look it up! Wink
What is the enthalpy and entropy change when ammonium chloride is dissolved in water?
When ammonium chloride dissolves in water, it absorbs energy from the surroundings, resulting in a positive enthalpy change (endothermic process). The dissolution also leads to an increase in disorder or randomness, resulting in a positive entropy change.
Is a positive enthalpy change indicative of an endothermic reaction?
Yes, a positive enthalpy change is indicative of an endothermic reaction.
Is the enthalpy of formation for na2co3 endothermic or exothermic?
The enthalpy of formation for Na2CO3 is negative, which means it is exothermic. This indicates that the formation of one mole of Na2CO3 from its elements in their standard states releases heat energy.
Is a positive enthalpy endothermic?
Yes, a positive enthalpy change indicates that a reaction is endothermic, meaning it absorbs heat from its surroundings.
What is the sign of the enthalpy change for an endothermic reaction?
Endothermic reaction: In an endothermic reaction, the products are higher in energy than the reactants. Therefore, the change in enthalpy is positive, and heat is absorbed from the surroundings by the reaction therefore enthalpy change show positive sign in a endothermic reaction..
How do you calculate the enthalpy of formation for a chemical compound?
To calculate the enthalpy of formation for a chemical compound, you subtract the enthalpies of formation of the reactants from the enthalpies of formation of the products. This gives you the overall change in enthalpy for the reaction, which represents the enthalpy of formation for the compound.
What is the difference of enthalpy of formation and the enthalpy of combustion?
Enthalpy of combusion is energy change when reacting with oxygen. Enthalpy of formation is energy change when forming a compound. But some enthalpies can be equal.ex-Combusion of H2 and formation of H2O is equal
What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the energy change when a substance is formed from its elements in their standard states. It represents the heat energy released or absorbed during the formation process. A negative value indicates that the reaction is exothermic, while a positive value indicates an endothermic reaction.
The change in enthalpy that accompanies the formation of a compound from its elements?
The energy change that happens when a substance forms from its elements (APEX)
Why does oxygen gas not have an enthalpy of formation but ozone does?
Oxygen gas (O2) does not have an enthalpy of formation because it is an element in its standard state, which has an enthalpy of formation of zero by definition. Ozone (O3), on the other hand, is a compound and has a defined enthalpy of formation because it is formed from its elements in their standard states.
What is process that involves absorption of heat?
endothermic reaction a positive enthalpy.
What does the negative sign on the value of an enthalpy of formation indicate?
A negative enthalpy of formation indicates that energy is evolved.
What is the standard enthalpy of formation for N2 gas?
The standard enthalpy of formation for N2 gas is 0 kJ/mol.
