At `21.5^@C` and a total pressure of 0.0787 atm, `N_2O_4` is 48.3% dissociated into `NO_2`. Calculate` K_c` for the reaction: `N_2O(g) iff 2NO_2(g)`. At what total pressure will the per cent dissociation be 10%?

Explanation

To solve the problem, we need to follow these steps:

### Step 1: Write the equilibrium reaction
The reaction we are dealing with is:
\[ N_2O_4(g) \rightleftharpoons 2NO_2(g) \]

### Step 2: Define the initial conditions
Let’s denote:
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