Advertisements
Advertisements
प्रश्न
Correct and balance the following equation:
\[\ce{Ca + H2O -> CaOH + H}\]
Advertisements
उत्तर
\[\ce{Ca + 2H2O -> Ca(OH)2 + H2}\]
APPEARS IN
संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{NaCl + AgNO3 -> AgCl + NaNO3}\]
How will you indicate the following effect in a chemical equation?
Exothermic reaction
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Translate the following statement into a chemical equation and then balance the equation:
Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.
Is Electrolysis of water an endothermic reaction or an exothermic reaction?
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 wire and alloys like brass.
(a) What do you think metal X could be?
(b) Write the name, formula and colour of salt XSO4.
(c) What is the blue precipitate Y?
(d) 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.
Balance the following chemical equation:
Write the balanced equation for the following chemical reaction.
\[\ce{Barium chloride + Aluminium sulphate -> Barium sulphate + Aluminium chloride}\]
Write word equation for the following skeletal equation:
\[\ce{Ca + O2 → CaO}\]
Write your observation for the following chemical reaction and name the product formed:
When sugar is heated.
Write your observation and name the product when An aqueous solution of barium chloride is added to dilute sulphuric acid.
To determine the percentage of water absorbed by raisins, raisins are soaked in water for:
Grills of doors and windows are always painted before they are used.
When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.
Write the balanced chemical equation for this reaction.
Give reason for the following:
Silver salts are kept in dark coloured bottles.
Balance the following simple equation:
Mg + N2 → Mg3N2
Balance the following simple equation:
Al + N2 → AlN
Writing a chemical reaction in brief by using chemical formulae is called as _______.
To balance the following chemical equation the value of x and y should respectively be:
\[\ce{2NaOH + xAl_2O_3->yNaAlO_2 + H_2O}\]
