Law of survival of crime:
Define the law of conservation of mass in chemical reactions?
At which stage of the law of conservation of mass experiment was hydrogen gas produced? Write the corresponding balanced reaction
Why did Mg dissolve but not Cu in the purification stage of copper?! Give a detailed explanation by mentioning the relevant quantity
At which stage of the law of conservation of mass experiment was nitrogen dioxide gas produced? Write the corresponding balanced reaction.
If too much sodium phosphate is added during the preparation of copper phosphate, explain exactly what will happen by mentioning the reaction?
If the copper carbonate solution under the strainer becomes cloudy during filtering, which two reasons can be listed? Write at least one effective reaction?
At which stage of the law of conservation of mass experiment was carbon dioxide gas produced? Write the corresponding reaction.
What happens if too much sodium hydroxide is added during the preparation of copper hydroxide? Explain by mentioning the reaction.
If the copper carbonate solution under the strainer turns blue during the filtration of the sediment, which two reasons can be blamed? Write the effective reaction in this situation.
What is the best way to prepare copper carbonate from copper phosphate? Write the required reactions complete and balanced
If in the recovery of copper from its chloride solution, first we reduce the first 50% of copper with Zn powder and then we reduce the second 50% of copper with the help of magnesium metal Mg, explain exactly: what will you observe?
Write the balanced equation of a complex formation reaction and an oxidation-reduction reaction in the experiment of the law of conservation of mass.?
Raoul’s Law:
What is the relationship between molality and lowering the freezing point of a solution?
Why should you not continue to stir after solidification begins in the Raywell’s law experiment?
Titration:
How can you determine to what extent the environment has become alkaline during a chemical reaction?
Why should the space under the buret valve be full of solution and not have air bubbles?
Why does the color of the titrated solution often change from purple to colorless after reaching the end point of the titration?
Chromatography:
What is the role of paper in paper chromatography?
What is the stationary phase in paper chromatography and what is its role in the progress of ions?
In the ammonia phase, which of the 5 ions changed color
When the chromatography paper was placed inside the desiccator, white smoke was observed. What is this smoke?
Write the reaction equation for its formation.
In the chromatography that you did, what effect does reducing the charge density of the ion have on the Rf of that ion?
Callimetry:
Define the blue value of the calorimeter and state its unit of measurement?
Can calorimeter parts be changed or replaced between steps A and B in calorimetry? Explain your reason exactly.
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