Question

Взял пример с ГИА 2010 по химии..."С выделением газа протекает реакция между:"1. карбонатом натрия и нитратом магния2. Фосфорной кислотой и нитратом бария3. Хлоридом аммония* и гидроксидом кальция4. хлоридом калия и нитратом серебраПервый вопрос - через какие реакции протекает газИ что такое Хлорид Аммония?* - см. выше

Answer 1

карбонатом натрия и нитратом магния

 NH4Cl - хлортд амония

Answer 2

Reaction with Sodium Carbonate and Magnesium Nitrate

The reaction between sodium carbonate and magnesium nitrate does not produce a gas. Instead, it forms solid products. Sodium carbonate (Na2CO3) is a white, crystalline compound commonly known as soda ash or washing soda. Magnesium nitrate (Mg(NO3)2) is a white, crystalline solid that is often used as a fertilizer.

Reaction with Phosphoric Acid and Barium Nitrate

The reaction between phosphoric acid and barium nitrate also does not produce a gas. It forms solid products as well. Phosphoric acid (H3PO4) is a clear, colorless liquid that is commonly used in fertilizers, detergents, and food additives. Barium nitrate (Ba(NO3)2) is a white, crystalline solid that is used in fireworks and signal flares.

Reaction with Ammonium Chloride and Calcium Hydroxide

The reaction between ammonium chloride and calcium hydroxide does produce a gas. Ammonium chloride (NH4Cl) is a white, crystalline salt that is commonly used in cough medicines and as a flux in soldering. Calcium hydroxide (Ca(OH)2) is a white, crystalline solid that is also known as slaked lime or hydrated lime.

When ammonium chloride reacts with calcium hydroxide, it produces ammonia gas (NH3) and water (H2O) as products. The reaction can be represented by the following equation:

2NH4Cl + Ca(OH)2 → 2NH3 + 2H2O + CaCl2

Ammonia gas is colorless and has a pungent odor. It is commonly used in cleaning products, fertilizers, and refrigeration systems.

Reaction with Potassium Chloride and Silver Nitrate

The reaction between potassium chloride and silver nitrate does produce a gas. Potassium chloride (KCl) is a white, crystalline salt that is commonly used as a fertilizer and in the production of potassium hydroxide. Silver nitrate (AgNO3) is a white, crystalline solid that is often used in photography and as a laboratory reagent.

When potassium chloride reacts with silver nitrate, it produces silver chloride (AgCl) as a solid precipitate and potassium nitrate (KNO3) as a soluble product. The reaction can be represented by the following equation:

KCl + AgNO3 → AgCl + KNO3

The gas produced in this reaction is nitrogen dioxide (NO2). Nitrogen dioxide is a reddish-brown gas with a pungent odor. It is a common air pollutant and is also used in the production of nitric acid.

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