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Complete and Balance the Following Equation: Na + O2 → - Science

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प्रश्न

Complete and balance the following equation:

Na  +  O2 →

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उत्तर

4Na(s) + O2(g) 2Na2O(s)    

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३३]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 34.1 | पृष्ठ १३३

संबंधित प्रश्‍न

Write the chemical reaction when iron reacts with dilute H2SO4.


A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


Name the metal which has been placed at the top of the reactivity series.


Complete and balance the following equation:


With the help of examples, describe how metal oxides differ from non-metal oxides.


What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.


Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.


Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.


A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.


Give one example, with equation, of the displacement of hydrogen by a metal from an acid.


Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?


What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.


A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr


State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury


Choose the correct alternative and rewrite the following:

Reaction of iron nails whith copper sulphate solution is an example of _____________________


Choose the correct alternative and rewrite the following:

Which of the following is lue in colour?


Arrange the following metals in the increasing order of their reactivities:

Copper, Zinc, Aluminium, and Iron


A cable manufacturing unit tested few elements on the basisof their physical properties.

Properties W X Y Z
Malleable Yes No No Yes
Ductile Yes No No Yes
Electrical conductivity Yes Yes Yes No
Melting Point High Low Low High

Which of the above elements were dicarded for usage by the company?


Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?


Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?


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