Question

1) Какие из перечисленных веществ будет реагировать с гидроксидом калия:CO2,CaO,H3PO4,Zn(OH)2,Mg(OH)2,Al(OH)3,H2S? Составьте уравнение реакций и назвать продукты реакций.2)В какие реакции могут вступать друг с другом вещества из группы:HNO3,LiOH,Na2CO3,CO2,H2SO3? Написать уравнение соответствующих реакций ,назвать продукты реакцийЗарание Спасибо!

Answer 1

KOH + H3PO4=K3PO4 + H2O
2KOH(разб.) + Zn(OH)2=K2ZnO2 + 2H2O
2KOH(конц.) + Zn(OH)2=K2[Zn(OH)4]
2KOH(насыщ.) + Mg(OH)2=K2[Mg(OH)4]
KOH(разб.) + Al(OH)3-KAlO2 + 2H2O
KOH(конц.) + Al(OH)3=K[Al(OH)4]
2KOH + H2S=K2S + 2H2O

Answer 2

Reactivity with Potassium Hydroxide (KOH)

Reactivity with KOH: - CO2: Carbon dioxide does not react with potassium hydroxide. - CaO: Calcium oxide reacts with potassium hydroxide to form calcium hydroxide. - H3PO4: Phosphoric acid reacts with potassium hydroxide to form potassium dihydrogen phosphate and water. - Zn(OH)2: Zinc hydroxide reacts with potassium hydroxide to form a zincate complex ion. - Mg(OH)2: Magnesium hydroxide does not react with potassium hydroxide. - Al(OH)3: Aluminum hydroxide does not react with potassium hydroxide. - H2S: Hydrogen sulfide does not react with potassium hydroxide.

Equations and Products: 1. CaO + 2KOH → Ca(OH)2 + K2O [[1 #]] - Product: Calcium hydroxide and potassium oxide. 2. H3PO4 + 3KOH → K3PO4 + 3H2O [[4 #]] - Product: Potassium dihydrogen phosphate and water. 3. Zn(OH)2 + 2KOH → [Zn(OH)4]^2- + 2K^+ [[5 #]] - Product: Zincate complex ion and potassium ion.

Reactivity among Grouped Substances

Reactions among Grouped Substances: - HNO3, LiOH, Na2CO3, CO2, H2SO3 - Nitric acid (HNO3) reacts with sodium carbonate (Na2CO3) to form sodium nitrate, carbon dioxide, and water. - HNO3 + Na2CO3 → 2NaNO3 + CO2 + H2O - Lithium hydroxide (LiOH) reacts with carbon dioxide (CO2) to form lithium carbonate and water. - 2LiOH + CO2 → Li2CO3 + H2O - Sulfurous acid (H2SO3) reacts with sodium hydroxide (NaOH) to form sodium sulfite and water. - H2SO3 + 2NaOH → Na2SO3 + 2H2O

Equations and Products: 1. HNO3 + Na2CO3 → 2NaNO3 + CO2 + H2O - Products: Sodium nitrate, carbon dioxide, and water. 2. 2LiOH + CO2 → Li2CO3 + H2O - Products: Lithium carbonate and water. 3. H2SO3 + 2NaOH → Na2SO3 + 2H2O - Products: Sodium sulfite and water.

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