Advertisements
Advertisements
प्रश्न
State the information conveyed by the following equation:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
उत्तर
A solid metal zinc reacts with hydrochloric acid in the aqueous state to produce zinc chloride in the aqueous state and hydrogen gas.
APPEARS IN
संबंधित प्रश्न
Give one example of a chemical reaction.
Write complete balanced equation for the following reaction:
Sulphur dioxide (gas) + Oxgyen (gas) Sulphur trioxide (gas)
Aluminium burns in chlorine to form aluminium chloride (AlCl3). Write a balanced chemical equation for this reaction.
Write word equation for the following skeletal equation:
\[\ce{CO + O2 -> CO2}\]
Write your observation for the following chemical reaction and name the product formed :
When manganese dioxide is added to potassium chlorate and heated.
Balance the equation stepwise.
H2S2O7(l) + H2O(l) → H2SO4(l)
Write the balanced chemical equation of the following reaction.
barium chloride + sulphuric acid → barium sulphate + hydrochloric acid
Write word equation for the following molecular equation:
\[\ce{H2 [g] + Cl2 [g] ->[sunlight] 2HCl}\]
Word equation:
State which form of energy is utilised in the above chemical reaction.
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.
Name the following:
Two gases which react under pressure in presence of a catalyst at elevated temperatures to give a gaseous product.