Which of the following pairs will give displacement reactions? (a) NaCl solution and copper metal (b) MgCl2 solution and aluminium metal

Answer 2AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2Ag (s) Silver Nitrate + Copper → Copper Nitrate + Silver

Iron nails become reddish brown in colour and solution becomes green in colour.

(a) Ammonia gas is formed  (b) Methane is formed

(a) The mass of 1 mole of nitrogen atoms is 14g.  (b) The mass of 4 moles of aluminium atoms is (4 × 27)g = 108g  (c) The mass of 10 moles...

1 mole of aluminium oxide (Al2O3) = 2 × 27 + 3 × 16 = 102g  i.e., 102g of Al2O3 = 6.022 × 1023 molecules of Al2O3  Then, 0.051 g of Al2O3...

M is the molecular mass of NaCl crystal. And N is the Avogadro's number of atoms. Since there are 2N ions in one gram molecule, The mass associated with each ion =...

(a) No displacement reaction will occur between NaCl solution and copper metal, as copper metal is Less reactive than sodium metal. (b) Al is less reactive than Mg. So, no displacement...

DISPLACEMENT RECATION : in this recation a more active element displaces or removes other element from a compound in solution . FOR EXAMPLE :- Iron + Copper Sulphate gives Iron Sulphate + Copper DOUBLE...

Decomposition reactions require energy (either in the form of heat, light or electricity) for breaking down the reactants. Hence, all decomposition reactions are endothermic.

In displacement reaction, more reactive element displaces less reactive element from its compound and in double displacement reaction, two different compounds exchange their ions and form two new compounds. ii. a. Double...