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Gaokao Chemistry Practice Question

关于下列 $\Delta H$ 的判断正确的是( $\quad$ ) $\mathrm{CO}_{3}^{2-}(\mathrm{aq})+\mathrm{H}^{+}(\mathrm{aq})=\mathrm{HCO}_{3}^{-}(\mathrm{aq})\ \Delta H_{1}$ $\mathrm{CO}_{3}^{2-}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l})$ = $\mathrm{HCO}_{3}^{-}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})\ \Delta H_{2}$ $\mathrm{OH}^{-}(\mathrm{aq})+\mathrm{H}^{+}(\mathrm{aq})=\mathrm{H}_{2} \mathrm{O}(\mathrm{l})\ \Delta \mathrm{H}_{3}$ $\mathrm{OH}^{-}(\mathrm{aq})+\mathrm{CH}_{3} \mathrm{COOH}(\mathrm{aq})=\mathrm{CH}_{3} \mathrm{COO}^{-}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l})\ \Delta \mathrm{H}_{4}$

  1. A.$\Delta H_{1}<0 \quad \Delta H_{2}<0$
  2. B.$\Delta H_{1}<\Delta H_{2}$
  3. C.$\Delta H_{3}<0 \quad \Delta H_{4}>0$
  4. D.$\Delta H_{3}>\Delta H_{4}$

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