Question

According to Bronsted – Lowry concept of acids and bases a conjugate acid –base pair can exist as

Mark the option in which conjugate pair is not correctly matched.

Species		Conjugate acid			Conjugate base
(A) $2SO_{3(g)}$		$C_{(s)} + H_{2}O_{(g)}$			$CO_{(g)} + H_{2(g)}$
(B) $CaCO_{3(s)}$		$CaO_{(s)} + CO_{2(g)}$			$NH_{4}HS_{(s)}$
(C) $NH_{3(g)} + H_{2}S_{(g)}$		$S_{8}$			$S_{2}$
(D) $S_{8},S_{2}$		$0.75atm^{3}$			$2.55atm^{3}$

• A. (A)
• A. (B)
• A. (C)
• A. (D)

Answer 1

: $HPO_{4}^{2 -}$ $H_{2}PO_{4}^{-}$ $PO_{4}^{3 -}$