Advertisements
Advertisements
Question
Define the following term:
Precipitate
Advertisements
Solution
Chemical reactions which are characterised by the formation of insoluble solid substances are called precipitates.
APPEARS IN
RELATED QUESTIONS
MATCH THE COLUMNS
| 1 . `H_2` + `CI_2` `→` 2HCI | a. displacement reaction |
| 2. `2FeCI_3`+ `H_2` `→` `2FeCI_2` +2HCI` | b. addition of an electronegative redical |
| 3. Fe + `CuSO_4` `→``FeSO_4` +Cu` | c. removal of an electronegative redical |
| 4. `2H_2O` +`4NO_2`+`O_2` `→` `4HNO_3` | d.reduction by adding hydrogen |
| 5. 3Fe +`3CI_2` `→` `2FeCI_3` | e.electrolysis of water |
| 6. `FeCI_3`+ 3NaOH `→``Fe(OH)_3``↓`+NaCI | F.double decomposition,precipitation reaction |
| 7.`2H_2O` `→` `2H_2``↑`+`O_2` | e. combination or synthesis reaction |
TRUE \ FALSE
Copper can displace iron from iron sulphate.
Fill in the blank:
The substances which undergo chemical change are called _______
Give a chemical test to distinguish between the following gases.
HCl and H2S
State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
Which of the following is not an “element + element → compound” type reaction?
Silver articles turning black: ______:: Boiling of H2O: physical change ______.
Burning of paper is the best example of ______ change.
Give an example of a chemical reaction for the following situation:
A change in colour is observed
