Advertisements
Advertisements
प्रश्न
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information not conveyed by the above chemical equation.
Advertisements
उत्तर
Information not conveyed are :
- Time, a reaction takes to complete.
- About the concentrations of reactants and products.
- Speed of reaction.
- Changes in color occurring – during the reaction.
- Whether heat is given out or absorbed during the reaction.
- The physical state of reactants and products.
APPEARS IN
संबंधित प्रश्न
Find the odd man out:
Turmeric, Methyl Orange, Rose petals, Beetroot.
A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate Y. Metal X is used in making electric wires and alloys like brass.
- What do you think metal X could be?
- Write the name, formula and colour of salt XSO4.
- What is the blue precipitate Y?
- Write a chemical equation of the reaction which takes place when salt XSO4 reacts with sodium hydroxide solution. Give the state symbols of all the reactants and products which occur in the above equation.
Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name
- oxidising agent, and
- reducing agent,
in this reaction.
Write the balanced equation for the following chemical reaction.
\[\ce{Barium chloride + Aluminium sulphate -> Barium sulphate + Aluminium chloride}\]
Show the formation of Na2O by the transfer of electrons.
Balance the following equation:
Fe + H2O → Fe3O4 + H2
Balance the following equation:
PbO + NH3 → Pb + H2O + N2
Write the balanced chemical equation of the following reaction. potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water
Give word equation for the following chemical reaction and give the names of the product formed.
\[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]
Give reason for the following:
Silver salts are kept in dark coloured bottles.
