Write an experiment to show the properties of acids and bases.
Answers
Answer:
Chemical species which donate proton or release H+ ions when dissolved in water are called acid. They turn blue litmus solution to red colour.
Hydrochloric acid reacts with zinc metal to produce zinc chloride and hydrogen gas. The reaction is given below:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
Hydrochloric acid reacts with Na2CO3 to produce carbon dioxide and turns the lime water milky as it forms calcium carbonate. The milkiness formed is disappeared when more than necessary carbon dioxide is passed through the solution. The reaction is as follows:
Na2CO3(s/aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g)
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)
Explanation:
Experimental Setup for Reaction with Zinc metal:
HCl reacts with Zinc metal
Procedure
Take a clean and dry test tube.
Add zinc granules in it.
Submerge the zinc granules in the test tube by adding hydrochloric acid to it.
Close the mouth of the test tube with cork which has a glass delivery.
A robust explosion takes place between 2-3 minutes liberating colourless and odourless gas.
When a burning match stick in got near the glass tube mouth the gas burns with a pale blue flame with a pop sound.
in Acids
Aqueous solutions of acids are electrolytes, meaning that they conduct electrical current. ...
Acids have a sour taste. ...
Acids change the color of certain acid-base indicates. ...
Acids react with active metals to yield hydrogen gas. ...
Acids react with bases to produce a salt compound and water.
in Base
Chemical Properties of Bases
Bases change the colour of litmus from red to blue.
They are bitter in taste.
Bases lose their basicity when mixed with acids.
Bases react with acids to form salt and water. ...
They can conduct electricity.
Bases feel slippery or soapy.
Some bases are great conductors of electricity.