When chlorine gas and hydrogen gas react to form hydrogen chloride, what will be the change of enthalpy of the reaction?

Explanation:

Reaction between chlorine and hydrogen gas will take place as follows.

Since, standard enthalpy of is 0 kJ/mol and is also 0 kJ/mol. is -92.30 kJ/mol.

Hence, change in enthalpy will be calculated as follows.

                                       = (-92.30 - 0) kJ/mol

                                       = -ve

Also, formation of bonds is taking place between both chlorine and hydrogen atoms. As a result, heat will be released during this process.

Thus, we can conclude that change in enthalpy will be negative.            

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

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explanation: