Advertisements
Advertisements
Question
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
NaOH + CO2 → Na2CO3 + H2O
Solution
NaOH + CO2 → Na2CO3 + H2O
Correct balance – 2NaOH
2NaOH + CO2 → Na2CO3 + H2O
APPEARS IN
RELATED QUESTIONS
Balance the following equation and add state symbols:
Zn + HCI → ZnCI2 + H2
Aluminium hydroxide reacts with sulphuric acid to form aluminium sulphate and water. Write a balanced equation for this reaction.
The chemical reaction between two substances is characterised by a change in colour from orange to green. These two substances are most likely to be:
(a) potassium dichromate solution and sulphur dioxide
(b) potassium permanganate solution and sulphur dioxide
(c) potassium permanganate solution and lemon juice
(d) potassium dichromate solution and carbon dioxide.
One of the following is an exothermic reaction. This is:
(a) electrolysis of water
(b) conversion of limestone into quicklime
(c) process of respiration
(d) process of photosynthesis
Write your observations and name the product when
Iron nails are added to an aqueous solution of copper sulphate.
Write your observation for the following chemical reaction and name the product formed :
When manganese dioxide is added to potassium chlorate and heated.
Write your observation for the following chemical reaction and name the product formed :
When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.
Balance the following equation :
Fe + O2 → Fe3 O4
Name the following:
The silvery residue obtained on heating mercury [II] oxide.
Write word equation for the following chemical reaction given below. Also state the observation seen in the case.
NaCl + AgNo3 → AgCU ↓ + NaN03
