Advertisements
Advertisements
प्रश्न
The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is ______.
विकल्प
Fe(OH)2
Cu(OH)2
Ca(OH)2
Fe(OH)3
Advertisements
उत्तर
The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is Cu(OH)2.
Explanation:
The pale blue Cu(OH)2 precipitate dissolves in excess of ammonium hydroxide derived from tetraamine copper sulphate.
\[\ce{Cu(OH)2 + (NH4)2SO4 + 2NH4OH -> [Cu(NH3)4]SO4 + 4H2O}\]
APPEARS IN
संबंधित प्रश्न
The equation 4NH3 + 5O2 → 4NO + 6 H2O, represents the catalytic oxidation of ammonia. If 100 cm3 of ammonia is used calculate the volume of oxygen required to oxidize the ammonia completely
Write balanced chemical equations for the following:
When the excess of ammonia is treated with chlorine.
Name the gas evolved in each of the following cases :
Ammonia reacts with heated copper oxide.
Name the following
Basic gas that is used as a refrigerant.
Name the following
Salt used to clean metal surface before soldering, tinning, etc.
Give a balanced chemical equation for the following:
Lab. preparation of ammonia using an ammonium salt.
Write equation for the following:
Burning of ammonia in oxygen.
Industrially, ammonia is obtained by direct combination of nitrogen and hydrogen.
(i) Write balanced equation for the direct combination of nitrogen and hydrogen.
(ii) Which of the metals - iron, platinum, copper - catalyse this direct combination?
(iii) Is the formation of ammonia promoted by high pressure or low pressure?
Write the equation for the reaction in the Haber process, that forms ammonia.
