Chemistry 5070 · O Level · Water

Water — practice question

Dissolved substances may lead to eutrophication and deoxygenation of water. How many of the ions shown here cause this effect? $\text{Cl}^-$, $\text{CO}_3^{2-}$, $\text{Na}^+$, $\text{NO}_3^-$, $\text{PO}_4^{3-}$

  • A1
  • B2
  • C3
  • D4

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