Chemistry
Give reasons for the following:
Concentrated sulphuric acid is a weaker acid compared to dilute sulphuric acid.
Answer
Strength of an acid is determined by the amount of hydronium ions it produces in it's aqueous solution. As dilute sulphuric acid dissociates almost completely thereby producing a high concentration of hydronium ions hence is a stronger acidic than concentrated sulphuric acid.
Related Questions
The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide.
![The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide. Name the apparatus A. Name the substance X placed in A and the substance Y placed in B. State the reason for conducting the titration using the apparatus A and B. State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt. State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization. Acids, Bases and Salts, Simplified Chemistry Dalal Solutions ICSE Class 10](https://cdn1.knowledgeboat.com/img/scd10/sodium-sulphate-preparation-simplified-chemistry-icse-class-10-252x178.png)
- Name the apparatus 'A'.
- Name the substance 'X' placed in 'A' and the substance 'Y' placed in B.
- State the reason for conducting the titration using the apparatus 'A' and 'B'.
- State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.
- State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.
Give balanced equations for the preparation of the following salts:
- Calcium oxide ⟶ Calcium chloride ⟶ Calcium carbonate
- Zinc sulphide ⟵ Zn ⟶ Zinc sulphate
- Iron [II] chloride ⟵ Fe ⟶ Iron [III] chloride
- Lead [II] oxide ⟶ Lead nitrate ⟶ Lead sulphate
- Copper [II] oxide ⟶ Copper [II] sulphate ⟵ Copper [II] hydroxide
Give reasons for the following:
An aqueous solution of the salt ammonium chloride is acidic in nature while an aqueous solution of sodium chloride is neutral.
Give reasons for the following:
In the preparation of an insoluble salt from another insoluble salt by precipitation [double decomposition], dilute nitric acid and not dilute sulphuric acid is generally used.