Answer : The standard enthalpy of reaction is, -318.618 kJ
Explanation :
Enthalpy change : It is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as 
The equation used to calculate enthalpy change is of a reaction is:
![\Delta H^o_{rxn}=\sum [n\times \Delta H^o_f(product)]-\sum [n\times \Delta H^o_f(reactant)]](https://tex.z-dn.net/?f=%5CDelta%20H%5Eo_%7Brxn%7D%3D%5Csum%20%5Bn%5Ctimes%20%5CDelta%20H%5Eo_f%28product%29%5D-%5Csum%20%5Bn%5Ctimes%20%5CDelta%20H%5Eo_f%28reactant%29%5D)
The equilibrium reaction follows:
The equation for the enthalpy change of the above reaction is:
![\Delta H^o_{rxn}=[(n_{(MA_2)}\times \Delta H^o_f_{(MA_2)})+(n_{(HX)}\times \Delta H^o_f_{(HX)})]-[(n_{(HA)}\times \Delta H^o_f_{(HA)})+(n_{(MX_2)}\times \Delta H^o_f_{(MX_2)})]](https://tex.z-dn.net/?f=%5CDelta%20H%5Eo_%7Brxn%7D%3D%5B%28n_%7B%28MA_2%29%7D%5Ctimes%20%5CDelta%20H%5Eo_f_%7B%28MA_2%29%7D%29%2B%28n_%7B%28HX%29%7D%5Ctimes%20%5CDelta%20H%5Eo_f_%7B%28HX%29%7D%29%5D-%5B%28n_%7B%28HA%29%7D%5Ctimes%20%5CDelta%20H%5Eo_f_%7B%28HA%29%7D%29%2B%28n_%7B%28MX_2%29%7D%5Ctimes%20%5CDelta%20H%5Eo_f_%7B%28MX_2%29%7D%29%5D)
We are given:
Putting values in above equation, we get:
![\Delta H^o_{rxn}=[(1\times -63.958)+(2\times -449.579)]-[(2\times -357.05)+(1\times 69.602)]=-318.618kJ](https://tex.z-dn.net/?f=%5CDelta%20H%5Eo_%7Brxn%7D%3D%5B%281%5Ctimes%20-63.958%29%2B%282%5Ctimes%20-449.579%29%5D-%5B%282%5Ctimes%20-357.05%29%2B%281%5Ctimes%2069.602%29%5D%3D-318.618kJ)
Thus, the standard enthalpy of reaction is, -318.618 kJ
Answer:
Lithium
Explanation:
Alkali metals are group of metals which are present in first group of periodic table. As we know atomic number is equal to number of protons contained by a particular element. Therefore, the alkali metals along with there number of protons are listed below;
Alkali Metal Number of Protons
Lithium 3
Sodium 11
Potassium 19
Rubidium 37
Cesium 55
Francium 87
Hence, it is cleared from above table that Lithium is having fewer protons than 10.
Explanation:
please can you send me the pic of Faith because I am not able to understand any of your location is too bad I can't answer sorry for stamp in which class you are in
Explanation:
Chromosomes are made up of genes and both are found in the cell’s nucleus.
