Advertisements
Advertisements
प्रश्न
Translate the following statement into a chemical equation and then balance it.
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. Write a balanced chemical equation for this reaction.
Advertisements
उत्तर
\[\ce{K_{(s)} + H2O_{(l)} -> KOH_{(aq)} + H2_{(g)}}\]
Balanced equation:
\[\ce{2K_{(s)} + 2H2O_{(l)} -> 2KOH_{(aq)} + H2_{(g)}}\]
APPEARS IN
संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{BaCl2 + H2SO4 -> BaSO4 + HCl}\]
What is wrong with the following chemical equation?
\[\ce{Mg + O -> MgO}\]
Correct and balance it.
Write a complete balanced equation for the following reaction:
\[\ce{Sulphur dioxide (gas) + Oxygen (gas) -> Sulphur trioxide (gas)}\]
Balance the following equation and add state symbols:
\[\ce{Zn + HCl -> ZnCl2 + H2}\]
What do you understand by endothermic reactions?
Give one example of an endothermic reaction.
A white precipitate will be formed if we add common salt solution to ______.
Balance the following chemical equation :
FeS + HCl → FeCl2 + H2S
Dry raisins were soaked in water for 2 hours, to determine the percentage of water absorbed by raisins. Before final weighing of swollen raisins, the extra water left on the surface of soaked raisins was removed by:
What information does the following chemical equation convey?
Zn + H2SO4 → ZnSO4+ H2
Answer the following question:
How do acids and bases react with each other? What is the name of the process? What product is obtained from these reactions?
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.
Write word equation for the following molecular equation:
CaO + H20 → Ca (OH)2 + Δ
Word equation:
State why [+ Δ ] is not written in the reaction, if ZnO reacts with H2O.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Is the equation given above a balanced equation. Give reasons.
Give word equation for the following chemical reaction and give the names of the product formed.
ZnCO3 → ZnO + CO2
Name the following:
Two non-metal which react explosively when brought in close contact.
Balance the following simple equation:
Zn + NaOH → Na2ZnO2 + H2
Balance the following simple equation:
Fe2O3 + H2 → Fe + H2O
Balance the following simple equation:
KBr + Cl2 → KCl + Br2
What is called thermolysis reactions?
