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प्रश्न
Balance the chemical equation.
\[\ce{HNO3 +Ca(OH)2 -> Ca(NO3)2 + H2O}\]
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उत्तर
\[\ce{2HNO3 +Ca(OH)2 -> Ca(NO3)2 + 2H2O}\]
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संबंधित प्रश्न
State whether the following statement is true or false:
A chemical equation can be balanced easily by altering the formula of a reactant or product.
Balance the following equation:
\[\ce{HNO3 + Ca(OH)2 -> Ca(NO3)2 + H2O}\]
When potassium nitrate is heated, it decomposes into potassium nitrite and oxygen. Write a balanced equation for this reaction and add the state symbols of the reactants and products.
State the various characteristics of chemical reactions.
You are given the solution of lead nitrate. In order to obtain a yellow precipitate you should mix with it a solution of ______.
An acid which can decolourise purple coloured potassium permanganate solution is ______.
Write symbolic representation for the following word equation and balance them :
Calcium oxide + Water → Calcium hydroxide
Complete the following equation:
CH2 + H5OH `("Hot Conc." H_2SO_4)/`>
Write the chemical equation for the following word equation and balance them.
Carbon + Oxygen → Carbon dioxide
Write the chemical equation for the following word equation and balance them.
Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of salt formed.
Choose the correct alternative and rewrite the following sentence.
Which of the following is not required to find the pH of a given solution?
Write word equation for the following molecular equation:
\[\ce{NH3 [g] + HCl [g] ⇌ NH4Cl [s]}\]
Word equation:
State which characteristic is observed in the above reaction.
Give an-example of a similar above characteristic, seen between two other gaseous reactants.
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.
Give reason for the following:
Silver salts are kept in dark coloured bottles.
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Balance the following simple equation:
NO + O2 → NO2
Write the skeleton equation for the following word equation and then balance them.
- Carbon + Oxygen → Carbon dioxide.
- Phosphorus + Chlorine → Phosphorus pentachloride.
- Sulphur + Oxygen → Sulphur dioxide.
- Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.
Which of the following is the correct observation of the reaction shown in the above set up?
