Which of the following substances interact with sodium hydroxide: carbon monoxide (4), calcium hydroxide

| April 9, 2021 | education

Which of the following substances interact with sodium hydroxide: carbon monoxide (4), calcium hydroxide, copper oxide (2), copper nitrate (2), ammonium chloride, silicic acid, potassium sulfate?

Sodium hydroxide belongs to the class of soluble bases (alkalis). They are characterized by interaction with acids, acid oxides, water-soluble salts (if this precipitates a precipitate or a gas is formed).
Carbon monoxide (IV) is an acidic oxide that reacts with sodium hydroxide:
2 NaOH + CO2 → Na2CO3 + H2O.
Calcium hydroxide (base) and copper (II) oxide (basic oxide) do not react with sodium hydroxide.
Copper (II) nitrate, a soluble salt, reacts with sodium hydroxide to form a precipitate:
Cu (NO3) 2 + 2 NaOH → Cu (OH) 2 ↓ + 2 NaNO3.
Ammonium chloride, a soluble salt, reacts with sodium hydroxide, gas is released:
NH4Cl + NaOH → NaCl + NH3 ↑ + H2O
Silicic acid (acid class) and potassium sulfate (a soluble salt, but will not give a precipitate or gas during the reaction) do not react with sodium hydroxide.



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