Chemistry
State what happens to the crystals of washing soda when exposed to air. Name the phenomenon exhibited.
Related Questions
Give an equation for the conversions A to E —
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.)
(a) What is the first step that is required to prepare lead sulphate from lead carbonate?
(b) Write the equation for the reaction that will take place when this first step is carried out.
(c) Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?
The diagram given below is to prepare Iron [III] chloride in the laboratory.
![The diagram given below is to prepare Iron [III] chloride in the laboratory. Why iron[III] chloride closed container. What is substance B. What is the purpose of B. Acids, Bases and Salts, Concise Chemistry Solutions ICSE Class 10](https://cdn1.knowledgeboat.com/img/cc10/iron-3-chloride-lab-prep-concise-chemistry-solutions-icse-class-10-426x158.png)
(i) What is substance B ?
(ii) What is the purpose of B ?
(iii) Why is iron[III] chloride to be stored in a closed container ?
(iv) Write the equation for the reaction between iron and chlorine.