Question

Расставь коэффициенты в уравнении реакции и дополни её характеристику. .... K2CO3 + .... HNO3 = .... KNO3 + .... H2O+CO2↑. Реакция возможна .... Признаком реакции является ....

Answer 1

Ответ:

K2CO3+2HNO3=2KNO3+Н2О+СО2

реакция идут при обычных условиях

признак реакции образование газа

Answer 2

#### Equation and Reaction Characteristics The balanced equation for the reaction is as follows: **K2CO3 + 2HNO3 → 2KNO3 + H2O + CO2↑** In this reaction, potassium carbonate (K2CO3) reacts with nitric acid (HNO3) to produce potassium nitrate (KNO3), water (H2O), and carbon dioxide gas (CO2) as a product. The reaction is balanced, meaning that the number of atoms of each element is the same on both sides of the equation. #### Coefficients in the Reaction The coefficients in the balanced equation represent the number of moles of each substance involved in the reaction. In this case, the coefficients are as follows: - 2 moles of potassium carbonate (K2CO3) - 2 moles of nitric acid (HNO3) - 2 moles of potassium nitrate (KNO3) - 1 mole of water (H2O) - 1 mole of carbon dioxide gas (CO2) These coefficients ensure that the law of conservation of mass is satisfied, meaning that the total mass of the reactants is equal to the total mass of the products. #### Reaction Possibility The given reaction is possible because the reactants potassium carbonate (K2CO3) and nitric acid (HNO3) can chemically react to form the products potassium nitrate (KNO3), water (H2O), and carbon dioxide gas (CO2). The reaction occurs due to the chemical properties and interactions between the atoms and molecules involved. #### Reaction Characteristics The reaction is characterized by the following: 1. **Formation of Products**: The reaction results in the formation of potassium nitrate (KNO3), water (H2O), and carbon dioxide gas (CO2). These products are formed as a result of the chemical reaction between the reactants. 2. **Gas Evolution**: The presence of the upward arrow (↑) next to the formula for carbon dioxide (CO2) indicates that carbon dioxide gas is produced as a product of the reaction. This gas is released into the surrounding environment. 3. **Balanced Equation**: The equation is balanced, meaning that the number of atoms of each element is the same on both sides of the equation. This ensures that the law of conservation of mass is satisfied. 4. **Chemical Transformation**: The reactants undergo a chemical transformation, resulting in the formation of new substances with different chemical properties. 5. **Exothermic Reaction**: The reaction between potassium carbonate and nitric acid is exothermic, meaning that it releases heat energy to the surroundings. Please let me know if there is anything else I can help you with!