Question

Ca - CaO- Ca(OH) 2- Ca(NO3) - NaNO3

Answer 1

Ответ:

2Ca + O2 = 2CaO

CaO + H2O = Ca(OH)2

Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O

Ca(NO3)2 + 2NaOH = Ca(OH)2 + 2NaNO3

Answer 2

The series of compounds you provided are:

1. Ca: This refers to the chemical symbol for calcium, which is an alkaline earth metal commonly found in the Earth's crust. Calcium has various uses and is essential for many biological processes.

2. CaO: This represents calcium oxide, also known as quicklime or burnt lime. It is a white, caustic, crystalline solid that is commonly used in the production of cement, as a drying agent, and in various chemical processes.

3. Ca(OH)2: This stands for calcium hydroxide, also known as slaked lime or hydrated lime. It is a white powder produced by adding water to calcium oxide. Calcium hydroxide has numerous applications, including in construction, water treatment, and as a pH regulator in various industries.

4. Ca(NO3)2: This represents calcium nitrate, which is a crystalline compound consisting of calcium ions (Ca²⁺) and nitrate ions (NO₃⁻). It is commonly used as a fertilizer, as a component in explosives, and in wastewater treatment.

5. NaNO3: This refers to sodium nitrate, which is a salt composed of sodium ions (Na⁺) and nitrate ions (NO₃⁻). Sodium nitrate is primarily used as a food preservative, particularly in processed meats. It also finds applications in fertilizers, pyrotechnics, and glass manufacturing.

Please note that the compound Ca(NO3) you mentioned seems to be incomplete. The nitrate ion (NO₃⁻) typically requires a positive ion to balance the charge. If you provide more information or clarify the intended compound, I can provide further details.