Advertisements
Advertisements
प्रश्न
Magnesium liberates ______ gas on reacting with hot boiling water.
Advertisements
उत्तर
Magnesium liberates hydrogen gas on reacting with hot boiling water.
Explanation:
When magnesium metal (Mg) reacts with hot boiling water, it undergoes a chemical reaction to produce magnesium hydroxide and hydrogen gas. While magnesium reacts very slowly with cold water, the increased thermal energy of boiling water significantly accelerates the reaction rate. The balanced chemical equation for this process is:
\[\ce{Mg_{(s)} + 2H2O_{(l)} -> MgOH2_{(aq)} + H2_{(g)}}\]
APPEARS IN
संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Write the chemical reaction when iron reacts with dilute H2SO4.
From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
- which reacts with water only on boiling, and
- another which does not react even with steam.
Write an equation for the reaction of:
Magnesium with oxygen
Complete and balance the following equation:
\[\ce{Cu(NO3)2_{(aq)} + Zn_{(s)} ->}\]
How do non-metals react with hydrogen? Explain with an example.
Why does aluminium not react with water under ordinary conditions?
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
What is the action of water on magnesium ? Write equation of the chemical 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.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
Calcium floats over water during the reaction with water. Give reason.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
The substance that will be flattened on beating with a hammer is ______.
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
