Advertisements
Advertisements
Question
Define the following term:
Hygroscopy
Advertisements
Solution
It is the phenomenon by which substances absorb moisture from air, but only sufficiently so as to become wet.
RELATED QUESTIONS
The salt prepared by the method of direct combination is _______.
Write a balanced equation for the preparation of the following salts:
Copper sulphate from Copper Carbonate.
How is common salt obtained from sea-water?
What name is given to the common salt which is mined from underground deposits? How was this salt formed?
What is a salt?
Write the names, formulae and colours of any two hydrated salts.
Give one example of a salt which gives an aqueous solution having:
pH less than 7
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4)2SO4
Which of salts will give:
acidic solutions?
Name a salt whose solubility decreases with temperature.
name two salts which are acidic.
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will have no effect on litmus solution?
Name the particles present in :
Strong electrolyte
Fill in the blank
___________ is the phenomenon by which hydrated salts on exposure to dry air, lose their water of crystallization and crumble to powder.
Name a colourless gas which bleaches.
Name gases which has a sour taste.
Differentiate hydrate and anhydrous salts with examples.
The chemical name of plaster of Paris is ______.
An aqueous solution of a salt turns blue litmus to red. The salt could be the one obtained by the reaction of ______.
