Advertisements
Advertisements
Question
Name the following:
The gas evolved when a dilute acid is added to chalk [limestone].
Advertisements
Solution
Carbon dioxide (CO2)
APPEARS IN
RELATED QUESTIONS
How will you indicate Endothermic reaction in a chemical equation?
Write the balanced equations for the following reaction, and add the state symbols:
Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.
Give one example of a chemical reaction characterised by formation of a precipitate.
Write word equation for the following skeletal equation:
\[\ce{KNO3 -> KNO2 + O2}\]
Write symbolic representation for the following word equation and balance them :
Aluminium + Chlorine → Aluminium chloride.
Name the fundamental law that is involved in every equation.
Write the balanced chemical equation of the following reaction.
potassium dichromate + hydrochloric acid → Potassium chloride + chromium chloride + water + chlorine
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Balance the following simple equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
