Advertisements
Advertisements
Question
Carbonic acid gives an acid salt but hydrochloric acid does not. Explain.
Advertisements
Solution
Carbonic acid is a dibasic acid i.e.; H2CO3. So, when it reacts with a base such as NaOH then there is only partial replacement of hydrogen ions of carbonic acid by sodium ion to form an acid salt as:
H2CO3 + NaOH → NaHCO3 + H2O
In case of hydrogen chloride which is a monobasic acid the salt produced will be normal as :
HCl + NaOH → NaCI + H2O
Concept Insight : Salts formed by partial replacement of hydrogen ions of acid by metallic ions are called acid salts.
APPEARS IN
RELATED QUESTIONS
Give two examples of the following:
hydracids
Out of three metals P, Q and R, P is less reactive than Q and R is more reactive than P and Q both. Suggest an activity to arragne P, Q and R in order of their decreasing reactivity.
Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:
Iron (III) chloride
The preparation of Lead sulphate from Lead carbonate is a two-step process. (Lead sulphate cannot be prepared by adding dilute Sulphuric acid to Lead carbonate.)
Why is the direct addition of dilute sulphuric acid to Lead carbonate an impractical method of preparing Lead sulphate?
Answer the following question.
Identify the acid and the base from which sodium chloride is obtained. Which type of salt is it? When is it called rock salt? How is rock salt formed?
Acids have a sour taste and they are soapy to touch.
______ acids have a relatively smaller amount of acids dissolved in a solvent.
Complete the following equation.
Ca(OH)2 + ______ → ______ + H2O
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with powdered zinc metal. Give a word equation for each reaction.
Select an oxide which dissolves in water forming an acid.
