Question

А)Mg+O2= ә) Ca(OH)2= 6) Na+H₂S= в) H3PO4+KCl= г) О2+КСl​

Answer 1

Ответ:

Mg+O2=MgO2

Ca(OH2)= Ca²+ +2OH-

2Na+H2S= Na2S+H2

H3PO4+3KCl=K3PO4+3HCl

KCl+O2=KClO2

Answer 2

А) Mg + O2 = ? The chemical equation Mg + O2 represents the reaction between magnesium (Mg) and oxygen (O2). This reaction is a combustion reaction, where magnesium reacts with oxygen to form magnesium oxide (MgO). The balanced chemical equation for this reaction is:

2Mg + O2 → 2MgO

This means that two moles of magnesium react with one mole of oxygen to produce two moles of magnesium oxide. [[1]]

Б) Ca(OH)2 = ? The chemical formula Ca(OH)2 represents calcium hydroxide. Calcium hydroxide is an inorganic compound that is commonly known as slaked lime or hydrated lime. It is formed when calcium oxide (CaO), also known as quicklime, reacts with water (H2O). The balanced chemical equation for this reaction is:

CaO + H2O → Ca(OH)2

This means that one mole of calcium oxide reacts with one mole of water to produce one mole of calcium hydroxide. [[2]]

В) Na + H₂S = ? The chemical equation Na + H2S represents the reaction between sodium (Na) and hydrogen sulfide (H2S). This reaction is a redox reaction, where sodium reacts with hydrogen sulfide to form sodium sulfide (Na2S) and hydrogen gas (H2). The balanced chemical equation for this reaction is:

2Na + H2S → Na2S + H2

This means that two moles of sodium react with one mole of hydrogen sulfide to produce one mole of sodium sulfide and one mole of hydrogen gas. [[3]]

Г) H3PO4 + KCl = ? The chemical equation H3PO4 + KCl represents the reaction between phosphoric acid (H3PO4) and potassium chloride (KCl). This reaction is a double displacement reaction, where the positive ions of the two compounds switch places. The balanced chemical equation for this reaction is:

H3PO4 + 3KCl → K3PO4 + 3HCl

This means that one mole of phosphoric acid reacts with three moles of potassium chloride to produce one mole of potassium phosphate (K3PO4) and three moles of hydrochloric acid (HCl). [[4]]

Д) О2 + КСl = ? The chemical equation O2 + KCl represents the reaction between oxygen (O2) and potassium chloride (KCl). This reaction is a combustion reaction, where oxygen reacts with potassium chloride to form potassium chlorate (KClO3). The balanced chemical equation for this reaction is:

2KCl + 3O2 → 2KClO3

This means that two moles of potassium chloride react with three moles of oxygen to produce two moles of potassium chlorate. [[5]]

I hope this helps! Let me know if you have any further questions.