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Why is it difficult to determine the enthalpy change of thermal decomposition of potassium hydrogencarbonate to potassium carbonate?
The reaction which forms potassium hydrogen carbonate from potassium carbonate, K2CO3 + H2O + CO2 --> KHCO3 is difficult to perform in a laboratory; the same goes for the decomposition. Hence instead of simply using a calorimeter or similar apparatus, it is necessary to use another reaction route and a Hess Cycle using two reactions such as: reaction A: K2CO3 + 2HCl --> 2KCL + H2O +CO2 reaction B: KHCO3 + 2HCl --> KCl + H2O +CO2 The enthalpy change of the decomposition of potassium hydrogen carbonate will be twice the enthalpy change for reaction B, minus the enthalpy change for reaction A.
How do you calculate the enthalpy change of a reaction?
To calculate the enthalpy change of a reaction, subtract the total enthalpy of the reactants from the total enthalpy of the products. This difference represents the enthalpy change of the reaction.
What is the ionic equation for a hydrogen and a carbonate?
H+ for hydrogen co32- for carbonates
The difference between ketones and carboxylic acids when reacting with sodium hydrogen carbonate?
The Difference between ketones and carboxylic acids when reacting with sodium hydrogen carbonate is that carboxlic acids give off caron dioxide when a sloution is added to little sodium hydrogen carbonate (or carbonate) solid or solution whereas ketone has no apparent reaction with the carbonate.
Why Isn't hydrogen gas formed from a mixture of copper carbonate and sulphuric acid?
Hydrogen gas is not formed in this reaction because copper carbonate and sulphuric acid react to form water, carbon dioxide, and copper sulfate. The hydrogen atoms in the sulfuric acid are not released as hydrogen gas in this reaction.
Why is it difficult to determine the enthalpy change of thermal decomposition of potassium hydrogencarbonate to potassium carbonate?
The reaction which forms potassium hydrogen carbonate from potassium carbonate, K2CO3 + H2O + CO2 --> KHCO3 is difficult to perform in a laboratory; the same goes for the decomposition. Hence instead of simply using a calorimeter or similar apparatus, it is necessary to use another reaction route and a Hess Cycle using two reactions such as: reaction A: K2CO3 + 2HCl --> 2KCL + H2O +CO2 reaction B: KHCO3 + 2HCl --> KCl + H2O +CO2 The enthalpy change of the decomposition of potassium hydrogen carbonate will be twice the enthalpy change for reaction B, minus the enthalpy change for reaction A.
Why is water identical to the standard enthalpy change of combustion of hydrogen.?
Water is identical to the standard enthalpy change of combustion of hydrogen because the combustion of hydrogen involves its reaction with oxygen to form water. The standard enthalpy change of this reaction is defined by the energy released when hydrogen combusts completely, which results in the formation of water as a product. Thus, the formation of water from hydrogen and oxygen under standard conditions directly correlates to the enthalpy change associated with the combustion process. Hence, the enthalpy change for the formation of water from its elemental components is equivalent to the enthalpy change of hydrogen combustion.
Is there a reaction between calcium carbonate and hydrogen peroxide?
There is no direct chemical reaction between calcium carbonate and hydrogen peroxide. Calcium carbonate is a stable compound and does not readily react with hydrogen peroxide under normal conditions.
What will happen if sodium hydrogen carbonate reacts with sodium carbonate?
When sodium hydrogen carbonate reacts with sodium carbonate, it will undergo a double displacement reaction forming sodium bicarbonate and sodium carbonate. The chemical equation is: NaHCO3 + Na2CO3 -> 2NaHCO3.
Is the reaction sodium hydrogen carbonate and sodium chloride possible?
Any reaction occur.
How do you calculate the enthalpy change of a reaction?
To calculate the enthalpy change of a reaction, subtract the total enthalpy of the reactants from the total enthalpy of the products. This difference represents the enthalpy change of the reaction.
What is the ionic equation for a hydrogen and a carbonate?
H+ for hydrogen co32- for carbonates
What is the description of the enthalpy of reaction?
The enthalpy of a chemical reaction is the change of heat during this reaction.
What is the description of the enthalpy of a reaction?
The enthalpy of a chemical reaction is the change of heat during this reaction.
The difference between ketones and carboxylic acids when reacting with sodium hydrogen carbonate?
The Difference between ketones and carboxylic acids when reacting with sodium hydrogen carbonate is that carboxlic acids give off caron dioxide when a sloution is added to little sodium hydrogen carbonate (or carbonate) solid or solution whereas ketone has no apparent reaction with the carbonate.
Why Isn't hydrogen gas formed from a mixture of copper carbonate and sulphuric acid?
Hydrogen gas is not formed in this reaction because copper carbonate and sulphuric acid react to form water, carbon dioxide, and copper sulfate. The hydrogen atoms in the sulfuric acid are not released as hydrogen gas in this reaction.
What is the chemical equation for sodium hydrogen carbonate and limewater?
The chemical equation for the reaction between sodium hydrogen carbonate (NaHCO3) and limewater (Ca(OH)2) is: NaHCO3 + Ca(OH)2 → CaCO3 + NaOH + H2O This reaction produces calcium carbonate (CaCO3), sodium hydroxide (NaOH), and water (H2O).
