`{:(A+BhArrC+D,,,K_(1eq)=10^(3),),(E+FhArrG+H,,,K_(2eq)=10^(-3),):}`
Which of these reaction will attain equilibrium earlier?

Explanation

To determine which of the two reactions will attain equilibrium earlier, we need to analyze the given equilibrium constants and understand their implications.

### Step 1: Identify the reactions and their equilibrium constants
We have two reactions:
1. \( A + B \rightleftharpoons C + D \) with \( K_{1eq} = 10^{3} \)
2. \( E + F \rightleftharpoons G + H \) with \( K_{2eq} = 10^{-3} \)

### Step 2: Understand the significance of equilibrium constants
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