Advertisements
Advertisements
प्रश्न
Write the chemical equation for the following word equation and balance them.
Calcium + Nitrogen → Calcium nitride
Advertisements
उत्तर
3Ca + N2→ Ca3N2
APPEARS IN
संबंधित प्रश्न
Write the balanced equation for the following reaction, and add the state symbols:
Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.
When water is added gradually to a white solid X, a hissing sound is heard and a lot of heat is produced forming a product Y. A suspension of Y in water is applied to the walls of a house during white washing. A clear solution of Y is also used for testing carbon dioxide gas in the laboratory.
(a) What could be solid X? Write its chemical formula.
(b) What could be product Y? Write its chemical formula.
(c) What is the common name of the solution of Y which is used for testing carbon dioxide gas?
(d) Write chemical equation of the reaction which takes place on adding water to slid X.
(e) Which characteristic of chemical reactions is illustrated by this example?
Balance the following equation. Also name the product formed.
CO2 + C → CO
Complete the following equation:
CH3COOH + NaOH →
Balance the following equation:
PbS + O2 → PbO + SO2
Write the name and molecular formula of a carbon compound having its name suffixed with "-ol" and having two carbon atoms in its molecule. With the help of a chemical equation indicate what happens when this compound is heated with excess conc. H2SO4.
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – copper carbonate.
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Lead nitrate to ammonium hydroxide.?
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Catalyst
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
6NaOH + 3Cl2 → 6NaCl + NaClO3 + 3H2O
