Given that \( K_{w} \) for water is \( 10^{-13} M^{2} \) at \( 62^{\circ} \mathrm{C} \), compute...

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Given that \( K_{w} \) for water is \( 10^{-13} M^{2} \) at \( 62^{\circ} \mathrm{C} \), compute the sum of \( \mathrm{pOH} \) and \( \mathrm{pH} \) for a neutral aqueous solution at \( 62^{\circ} \mathrm{C} \) :
(a) \( 7.0 \)
(b) \( 13.30 \)
(c) \( 14.0 \)
(d) \( 13.0 \)
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