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प्रश्न
Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?
उत्तर
There is no colour change on adding copper turning in zinc sulphate solution because copper is less reactive than zinc and it cannot displace zinc from its salt solution. So, displacement reaction does not take place.
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संबंधित प्रश्न
Example of an amphoteric oxide is:
Which of the following metals liberate hydrogen with 5% HNO3?
(i) Cu
(ii) Zn
(iii) Mn
(iv) Mg
Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
Material: Copper wire, Iron nail, Beaker or Big test tube.
Chemicals: Ferrous Sulphate and Copper Sulphate Solution.
- Which reaction you will study with the help of the above material and solutions? Draw the diagram of the experiment arrangement.
- How do you identify that the reaction is carried out?
- Which type of reaction did you observe?
Answer the questions based on the figure below:
- Which reaction is shown in the figure?
- Which gas is evolved in the reaction?
- Give an example of reactants that rapidly show this reaction. Give equations.
- Give an example of reactants that do not react rapidly.
- In what condition will reactants of (c) part react? Give equation.
Keerti added dilute Hydrochloric acid to four metals and recorded her observations as shown in the table given below:
| Metal | Gas Evolved |
| Copper | Yes |
| Iron | Yes |
| Magnesium | No |
| Zinc | Yes |
Select the correct observation(s) and give chemical equation(s) of the reaction involved.
Metal oxides generally react with acids, but few oxides of metal also react with bases. Such metallic oxides are:
- MgO
- ZnO
- Al2O3
- Cao
On adding dilute sulphuric acid to a test tube containing a metal ‘X’, a colourless gas is produced when a burning match stick is brought near it. Which of the following correctly represents the metal ‘X’?
