Advertisements
Advertisements
प्रश्न
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Iron [II] sulphate to sodium hydroxide.
Advertisements
उत्तर
Iron [II] sulphate and sodium hydroxide
\[\ce{FeSO4 + 2NaOH -> Na2SO4 + \underset{\text{Iron[II] hydroxide}}{Fe(OH)2↓}}\]
The precipitate formed is Iron [II] hydroxide which is dirty green in colour.
APPEARS IN
संबंधित प्रश्न
Balance the following equation:
\[\ce{NH3 + CuO -> Cu + N2 + H2O}\]
Name the fundamental law that is involved in every equation.
Write the balanced chemical equation of the following reaction. potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water
Write the balanced chemical equation of the following reaction.
zinc sulphide + oxygen → zinc oxide + sulphur dioxide
Write the balanced chemical equation of the following reaction.
aluminium sulphate + sodium hydroxide → sodium sulphate + sodium meta aluminate + water.
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.
Balance the following simple equation:
N2 + O2 ⇌ NO
Balance the following simple equation:
NaOH + Cl2 → NaCl + NaClO + H2O
What are products? Explain with the help of example.
Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
