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प्रश्न
Balance the following equation:
NaHCO3 → Na2CO3 + H2O + CO2
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उत्तर
2NaHCO3 → Na2CO3 + H2O + CO2
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संबंधित प्रश्न
Balance the following equation:
\[\ce{Mg(OH)2 + HCl -> MgCl2 + H2O}\]
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 word equation for the following skeletal equation:
\[\ce{KNO3 -> KNO2 + O2}\]
Write the chemical equation for the following word equation and balance them.
Calcium oxide + Carbon dioxide → Calcium carbonate
(a) Give only one suitable chemical test to identify the following gases.
- Ammonia
- Sulphur dioxide
- Hydrogen Chloride
- Chlorine
- Carbon Dioxide
- Oxygen
- Hydrogen
(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?
(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?
(d) State the gas responsible for bleaching action.
(e)Which gas turn blue cobalt chloride paper light pink?
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 – zinc carbonate.
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + S → ZnS
Give an example of a chemical equation in which two reactants form:
four product
Balance the following simple equation:
CaO + HCl → CaCl2 + H2O
Why should a magnesium ribbon be cleaned before burning in air?
