Advertisements
Advertisements
प्रश्न
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
उत्तर
Na2CO3 + 2HCl → 2NaCl + H2O + CO2
APPEARS IN
संबंधित प्रश्न
Write word equation for the following skeletal equation:
\[\ce{AgBr -> Ag + Br2}\]
Write the balanced chemical equation of the following reaction.
aluminium + sodium hydroxide + water → sodium meta aluminate + hydrogen
Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
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 – mercury [II] oxide.
Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.
Balance the following simple equation:
Fe2O3 + CO → Fe + CO2
Write a balanced equation for the following word equation:
Nitrogen dioxide + Water + Oxygen → Nitric acid
What are reactants? Explain with the help of example.
What is a chemical equation?
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?
- In beakers A and B, exothermic process has occurred.
- In beakers A and B, endothermic process has occurred.
- In beaker C exothermic process has occurred.
- In beaker C endothermic process has occurred.