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प्रश्न
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Pressure
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उत्तर
Pressure:
It causes the reacting molecules, to come together and collide with greater intensity.
Example:
Production of ammonia.
\[\ce{N2 + 3H2 ⇌[Fe - 450°C][200 atoms.] 2 NH3 + \triangle}\]
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संबंधित प्रश्न
Balance the following equation:
\[\ce{Al2(SO4)3 + NaOH -> Al(OH)3 + Na2SO4}\]
Balance the equation stepwise.
Ag(s) + HCl(aq) → AgCl ↓+ H2 ↑
Balance the following equation:
P + HNO3 → NO2 + H2O + H3PO4
Write the balanced chemical equation of the following reaction.
potassium dichromate + hydrochloric acid → Potassium chloride + chromium chloride + water + chlorine
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.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Name the reactants and the products in the above equation.
Balance the following simple equation:
Mg + N2 → Mg3N2
Balance the following simple equation:
Al + H2O → Al2O3 + H2
Write a balanced equation for the following word equation:
Potassium bromide + Chlorine → Potassium chloride + Bromine
Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?
