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23 Oct 2021

Given information

  ----------(1)

                            -----------(2)

                          ----------(3)

Step-by-step explanation

Step 1.

The reaction with unknown enthalpy change is as follows:

--------------(4)

The enthalpy change of the given reaction is calculated by multiplying the equation-(2) with 5 and equation-(3) with 3, adding both and subtracting equation-(1) from it.

Equation (2) as follows:

 

-------------(5)

Equation (3) as follows:

 

-----------(6)

Addition of the equations (5) and (6) as follows:

--------(7)

subtracting equation (1) from (7) as follows:

Thus, the final equation as follows:

 

 

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