Advertisements
Advertisements
प्रश्न
What can you say about the pH of a solution that liberates carbon dioxide from sodium carbonate?
उत्तर
The solution that liberates carbon dioxide from sodium carbonate has pH below 7 and hence acidic in nature. Since acids react with carbonates to liberate carbon dioxide gas as:
\[\ce{Carbonate + dil. Acid → Salt + Water + Carbon dioxide}\]
For example : \[\ce{NaHCO3 + HCI → NaCI + H2O + CO2}\]
APPEARS IN
संबंधित प्रश्न
You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Give the pH value of pure water.
State three applications of pH scale.
Define an indicator.
Two solutions A and B have pH values of 2 and 9 respectively which one of these two will give a pink colour with phenolphthalein indicator?
Fill in the blank
pH scale was introduced by _________ in 1909.
Define the following term : pH scale
Solution P has a pH of 13, solution Q has a pH of 6 and solution R has a pH of 2.
Which solution will liberate ammonia from ammonium sulphate on heating?
A given white crystalline salt was tested as follows:
It dissolved in water and the resulting solution of the salt turned blue litmus red. What conclusions can be drawn for the observation?
Describe the tests used to determine acids and bases.
