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Why does the blue colour remains blue during electrolysis of copper sulphate solution using copper electrodes?
Wiki User
∙ 10y ago
During the electrolysis of Copper sulphate ,at the cathode ,copper and hydrogen both being positively charged migrate towards the cathode.While at the anode
Wiki User
∙ 10y ago
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What is always true of a weak base?
Some of the original base remains in the solution
What is always true of weak base?
Some of the original base remains in the solution
What happens during electrolysis of znso4?
It depends on the electrodes being used :1) If Pt(inert) electrodes are used, then the products will be:Cathode: Zn2+ + 2e- ------> ZnAnode: 2H20 ---------> 4H+ + O2 + 4e-(or) 4OH- ----------> O2 + 4H2O + 4e-(they are one and the same rxn )SO42- is a spectator ion here.Net rxn: 2Zn2+ + 2H2O ----------------> 2Zn + O2 + 4H+(or) 2ZnSO4 + 2H2O -----------------> 2Zn + O2 + 2H2SO4(use Pt electrode)Also if not mentioned, always inert electrodes i.e. Pt electrodes are taken.2) If very pure Zn electrodes are used, that too in an O2 free atmosphere, then the products will remain the same.3) If some Cu impurity is present in the Zn electrode, then at cathode H2O (or H+) is reduced instead of Zn .i.e. 2H+ + 2e- -----------> H2or) 2H2O + 2e- ---------> H2 + 2OH-Anode rxn remains the same.4) If s pure Zn electrodeare used in an O2 atmosphere, then again H2O (or H+) is reduced instead of Zn. (the rxns are similar to case 3)
The minerals which form in a solution from acids and bases are called what?
Its Salt Remains, not just "salt".
What color does blue litmus turn when dipped in an alkaline solution?
The solution is alkaline, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
What are inert and active electrodes?
Inert electrodes simply serve as electrical conductors and are unchanged by the cell processes. Active electrodes change during the cell reactions. An example of inert electrodes is platinum in the electrolysis of water. The platinum remains unchanged and the water is split into hydrogen and oxygen. An example of active electrodes is in the electrolysis of copper sulfate solution with copper electrodes. The anode copper is converted into copper ions in the solution, and metallic copper builds up on the cathode. The term active electrode is also used in eeg measurement, here as the opposite to passive electrode. Electrodes are the pads attached to the skin to get readings, and active ones don't need a conductive paste to get a good signal.
What happens if you mix ferric sulphate and sodium hydroxide?
Solid ferric hydroxide, Fe(OH)3, precipitates out of solution. The resulting sodium sulphate remains dissolved.
Why molarity of a solution remains constant?
Molality of a solution remains constant as mass of a solution independent of temperature.
Why is the reaction between barium chloride and sodium sulphate also called presipitation reaction?
The classic test for sulphate is to add a barium salt ( BaCl2 or Ba(NO3)2), which are soluble. When the sulphate anions come into contact with the barium cations, they immeiately combine as a white solid and fall to the bottom of the reaction vessel. The chloride and/or nitrates anions remain in solution.
How is sodium separated from other materials found with it?
Take a container with both elements and lower the temp. to -77 degrees; the liquid that forms is nitrogen & the other remains a gas. :)
How do you test for proteins?
The most reliable protein test is the Biuret test, which detects peptide links. It is performed as follows... 1. Place a sample of the solution to be tested in a test tube and add an equal volume of sodium hydroxide solution at room temperature. 2. Add a few drops of very dilute (0.05%) copper II sulphate solution and mix gently. 3. A purple coloration indicates the presence of peptide bonds and hence a protein. If no protein is present, the solution remains blue.
What remains in solution?
A true solution is monophasic without any residue..
How do you separate hydrogen and oxygen gas after you make it from electrolysis?
Use a distillation column. It cools down the gases to below the boiling point of oxygen at high preassure. Oxygen condenses and forms a liquid that can be tapped from the column while hydrogen remains a gas. Why not separate the electrodes used in the electrolyzation process and trap hydrogen at one and the oxygen at the other? It is a lot easier, and probably a lot less dangerous (as a hydrogen and oxygen gas mixture is explosive).
What is the solution that remains after a precipitate has formed?
Supernatant.
Is aluminium sulphate harmful to marine wildlife also source please?
No, it is not harmful, it is a water soluble compound and remains as free ions in water.
Is it true that the pH of a solution remains constant with increasing basicity?
No, it is not true.
If a solution remains unsaturated mineral crystals may precipitate?
true
