Zn has a lower reduction potential than Cu and so the Zn will be oxidized (lose electrons) to become Zn^2+ and the Cu^2+ in solution will be reduced (gain electrons) to become Cu(s).
Litmus paper is blue when dipped in an alkaline solution, and red when placed in an acidic solution. The colors begin to merge when you test pH neutral liquids.
A strip of litmus paper will turn red in an acidic solution.
When a strip of litmus paper is dipped into an acidic solution, it turns red. This is because litmus paper changes color in response to the pH of the solution it comes into contact with. In acidic solutions, the paper turns red, indicating low pH.
A white precipitate of silver chloride forms on the plastic strip due to a chemical reaction between the chloride ions present in the plastic and the silver ions in the silver nitrate solution. The silver chloride can be removed from the plastic by rinsing it with water to reveal a visible change on the strip.
Remember that the strip of potato is made of thousands of cells. When there is more salt outside the cells, water will leave. The strip will 'wilt' as the cell loses water and begins to shrivel up.
Litmus paper is blue when dipped in an alkaline solution, and red when placed in an acidic solution. The colors begin to merge when you test pH neutral liquids.
When a strip of zinc is dipped in copper sulfate solution, a single displacement reaction occurs. Zinc, being more reactive than copper, displaces copper from the copper sulfate solution, forming zinc sulfate and depositing elemental copper on the strip. The solution changes color from blue (due to the copper sulfate) to colorless as zinc sulfate forms, and copper can be seen as a reddish-brown precipitate on the zinc strip.
Zinc is higher than copper in the electrochemical series, so it will displace copper from it's solutions.Zn + CuSO4 = ZnSO4 + CuCopper plates onto the zinc as a small amount of zinc sulphate is produced.
will stay normal
It turns red.
A strip of litmus paper will turn red in an acidic solution.
Red litmus become blue in basic solutions.
When a strip of litmus paper is dipped into an acidic solution, it turns red. This is because litmus paper changes color in response to the pH of the solution it comes into contact with. In acidic solutions, the paper turns red, indicating low pH.
coke being acidic will give a redish orange color on the pH strip.
It would turn Green
The color become blue.
A white precipitate of silver chloride forms on the plastic strip due to a chemical reaction between the chloride ions present in the plastic and the silver ions in the silver nitrate solution. The silver chloride can be removed from the plastic by rinsing it with water to reveal a visible change on the strip.