Advertisements
Advertisements
प्रश्न
Explain the following reaction with the balanced equation.
Sodium aluminate reacts with water
Advertisements
उत्तर
Sodium aluminate reacts with water to give aluminium hydroxide as a precipitate and sodium hydroxide.
\[\ce{\underset{\text{Sodium aluminate}}{NaAlO_{2(aq)}} + \underset{\text{Water}}{2H2O_{(l)}} -> \underset{\text{Sodium hydroxide}}{NaOH_{(aq)}} + \underset{\text{Aluminium hydroxide}}{Al(OH)_3↓}}\]
APPEARS IN
संबंधित प्रश्न
Name the following:
Main ore of aluminium.
Give reasons.
Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.
The process by which sulphide ore is concentrated.
Name two metals which are highly resistant to corrosion.
Why are the metals like Na, K, Ca and Mg never found in their free state in nature?
An ore of manganese metal is:
(a) bauxite
(b) haematite
(c) cuprite
(d) pyrolusite
Which metal can be extracted from the following ore?
bauxite
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
Why is powdered coke sprinkled on top of the electrolyte?
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as ______.
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
Find the odd one out and give its explanation.
Write the name.
Metals which are amphoteric in nature.
Explain concept with example/explain with the help of a balanced equation.
Ionic bond and ionic compounds
Explain Bayer’s process of concentration of bauxite with a chemical equation.
In thermite welding a mixture of ____________ is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.
In extraction of copper, the flux used is ____________.
Electrical wires have a coating of an insulting material. The material, generally used is
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.
