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Explain the following reaction with the balanced equation. Sodium aluminate reacts with water - Science and Technology 1

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प्रश्न

Explain the following reaction with the balanced equation.

Sodium aluminate reacts with water

टीपा लिहा
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उत्तर

Sodium aluminate reacts with water to give aluminium hydroxide as a precipitate and sodium hydroxide.

\[\ce{\underset{\text{Sodium aluminate}}{NaAlO_{2(aq)}} + \underset{\text{Water}}{2H2O_{(l)}} -> \underset{\text{Sodium hydroxide}}{NaOH_{(aq)}} + \underset{\text{Aluminium hydroxide}}{Al(OH)_3↓}}\]

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पाठ 8: Metallugy - Explain the following reactions with the balanced equations

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
पाठ 8 Metallugy
Explain the following reactions with the balanced equations | Q 6

संबंधित प्रश्‍न

Give reasons.

Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.


In the extraction of aluminium: Why is it necessary to replace anodes time to time?


Fill in the following blank with suitable word:

 The non-metal present in steel is ............


Name the metal which is extracted from the ore called 'rock salt'.


Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.


The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide
(b) hydride
(c) sulphide
(d) carbonate


A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution? Why?


State three objectives achieved during the roasting of ores.


Give the principles of the hydrolytic method.


Give reasons, why aluminum is used in:

making alloys


Aluminum is used in thermite welding:

what is thermit?


Name the anode, the cathode and the electrolyte used in the electrolytic refining of impure copper.


 Give the chemical formula of : 
Bauxite 


Arrange the metals of copper, iron, magnesium, sodium and zinc in the decreasing order of reactivity.


Name the following :

The Process of heating an ore to a high temperature in the presence of air.


In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining


Explain concept with example/explain with the help of a balanced equation.

Ionic bond and ionic compounds


Explain in brief types of extraction of less reactive metals according to their reactivity.


During extraction of metals, electolytic refining is used to obtain pure metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?


Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?


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