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प्रश्न
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
What do you observe when a few drops of red litmus solution are added to the turbid solution.
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उत्तर
If dilute hydrochloric acid is added to the turbid solution, then they react and neutralize each other, forming the soluble salt calcium chloride (CaCl2) and water.
Ca(OH)2 + 2HCl → CaCl2 + 2H2O
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
Hydrogen can be prepared with the metal zinc by using: alkali
Give an equation.
Thin strips of magnesium, copper, and iron are taken.
Arrange these metals in descending order of reactivity.
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Which of the following metals does not give hydrogen with acids?
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Using dilute sulphuric acid how would you differentiate between:
Sodium sulphide and sodium carbonate.
How would you identify the gaseous products evolved.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
