Advertisements
Advertisements
प्रश्न
Write symbolic representation for the following word equation and balance them :
Calcium oxide + Water → Calcium hydroxide
Advertisements
उत्तर
Calcium oxide + Water → Calcium hydroxide
`"CaO" + "H"_2"O" → "Ca" ("OH")_2`
APPEARS IN
संबंधित प्रश्न
Complete and balance the following equation:
\[\ce{NaOH + {..........} -> Na2SO4 + H2O}\]
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.
Write your observation and name the product when zinc reacts with dilute hydrochloric acid.
Raisins are wiped off gently before final weighing with the help of
The step(s) necessary for determining the percentage of water absorbed by raisins is/are:
State the information conveyed by the following equation:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
Write the balanced chemical equation of the following reaction.
potassium dichromate + sulphuric acid → potassium sulphate + chromium sulphate + water + oxygen.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
What is the indications of the arrow between the reactants and the products and of the arrow pointing downwards at the end.
Name the following:
A catalyst which increases the rate of a chemical reaction.
Write a balanced equation for the following word equation:
Lead dioxide [lead (IV) oxide] → Lead monoxide + Oxygen
