Advertisements
Advertisements
प्रश्न
Can we keep sodium immersed under water? Why?
Advertisements
उत्तर
No, we cannot keep sodium immersed in water because it reacts vigorously, even with cold water, to form sodium hydroxide, hydrogen gas, and a large amount of heat.
\[\ce{2Na_{(s)} + 2H2O_{(l)} -> 2NaOH_{(aq)} + H2_{(g)} + Heat}\]
APPEARS IN
संबंधित प्रश्न
Write equations for the reactions of calcium and potassium with water.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be ______.
Food cans are coated with tin and not with zinc because ______.
Differentiate between metals and non-metals on the basis of their chemical properties.
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a ‘pop’ sound.
Name the metal which has been placed at the bottom of the reactivity series.
Name the metal which has been placed just below copper in the reactivity series.
What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
You are given samples of three metals - sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
What special name is given to substances like aluminium oxide?
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Name one metal which displaces silver from a silver nitrate solution.
An acidic oxide is produced by the element ______.
Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
