Advertisements
Advertisements
Question
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Advertisements
Solution
\[\ce{\underset{\text{(aq.)}}{FeSO4} +\underset{\text{(aq.)}}{NaOH} -> Fe(OH)2 + Na2SO4}\]
APPEARS IN
RELATED QUESTIONS
Name three biochemical catalysts found in the human body.
Fill in the blanK
A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.
Give a reason.
Wasp sting is treated with vinegar.
TRUE \ FALSE
Copper can displace iron from iron sulphate.
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
Name: Two carbonates do not produce carbon dioxide on heating.
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
Give a chemical test to distinguish between the following gases.
NH3 and HCl
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Give a word equation for the following reaction.
A compound which on heating shows – colour change from brown to yellow.
What happens when cane sugar is strongly heated? Mention any two changes in it.
What is the role of a catalyst in a chemical reaction?
The changes in which new substance with new chemical properties are formed are ______.
Water boiling into water vapour is an example of chemical change.
Match the following:
| 1. | Sodium Chloride | a. | CaSO41/2H2O |
| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
| 3. | Magnesium sulphate hydrate | c. | CaSO4.2H2O |
| 4. | Calcium sulphate hemihydrate | d. | NaCl |
| 5. | Phenol | e. | MgSO4.H2O |
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
Classify the following processes into physical or chemical changes:
- Beating of aluminium metal to make aluminium foil.
- Digestion of food.
- Cutting of a log of wood into pieces.
- Burning of crackers.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
______ occurs in the absence of air and in the presence of micro-organisms such as yeast.
