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is there a color change reaction between oxalic acid and potassium carbonate?
Jerry Belton
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What happens when potassium iodide is added to ammonium carbonate?
no reaction/no change
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.
What type of reaction is the reaction between calcium carbonate and hydrochloric acid?
Chemical Change
What is the chemical equation for potassium nitrate and water?
There is no chemical reaction between potassium nitrate and water. Potassium nitrate dissolves in water, which is a physical change.
What is the reaction between hexene and potassium permanganate?
This reaction involves the decolourisation of the potassium permanganate - colour change from purple to colourless. This is unique alkenes on account of their double bonds.
Why can't potassium hydroxide be used to test for carbon dioxide?
it is because potassium hydroxide will react with carbon dioxide to form potassium carbonate and water. but potassium carbonate is soluble, so there will be no visible change to see if there is carbon dioxide emitted
Is the reaction between magnesium nitrate and potassium chromate chemical or physical what is the chemical equation for this reaction?
The reaction between magnesium nitrate and potassium chromate is a chemical change. 2KOH(aq) + Mg(NO3)2(aq) --> 2KNO2(aq) + Mg(OH)2(s)
Is Potassium chloride decomposes to potassium chloride and oxygen gas is a physical or chemical change?
Chemical
How calcium carbonate change into oxides?
The reaction is:CaCO3==heating=====>CaO + CO2
What is the chemical change when barium nitrate and potassium iodide are mixed?
no reaction.
Is sodium and potassium react violently with water a chemical change?
Sodium and potassium reacting violently with water is a chemical reaction, causing a chemical change.
Is reaction of potassium bicarbonate with heat chemical change?
Once potassium bicarbonate reaches a temperature of about 100 to 120 degrees Celsius it undergoes a decomposition reaction: 2(KHCO3) = K2CO3 + H2O + CO2. This is a chemical change.
