Advertisements
Advertisements
प्रश्न
An hydrous hydrogen chloride is not an acid but its aqueous solution is a strong acid. Explain.
Advertisements
उत्तर
Anhydrous hydrogen chloride is not an acid but its aqueous solution is a strong acid because anhydrous means without water and we know that the property of acidity is shown by a substance only when it is dissolved in water or its aqueous solution is prepared.
APPEARS IN
संबंधित प्रश्न
Name one natural source of the following acids:
Oxalic acid
Name one animal and one plant whose stings contain formic acid (or methanoic acid).
When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.
- What are X, Y and Z?
- Write equations for the reactions which take place:
- When limestone reacts with dilute HCl.
- When gas X reacts with lime water to form white precipitate Y.
- When excess of gas X dissolves white precipitate Y to form a soluble compound Z.
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
What is the nature of soap (acidic/basic) as shown by the indicator present in curry stain?
Name the acid present in vinegar.
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
Fill in the blank
The word acid comes from latin word acidus meaning _________
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
When an acidic solution is mixed with a basic solution, they ______ each other forming ______ and water.
Fill in the cross word given in figure with the help of the clues provided.
Across
(2) The solution which does not change the colour of either red or blue litmus.
(4) Phenolphthalein gives pink colour in this type of solution.
(7) Colour of blue litmus in lemon juice.
Down
(1) It is used to test whether a substance is acidic or basic.
(3) It is a natural indicator and gives pink colour in basic solution.
(5) Nature of ant’s sting.
(6) It is responsible for the increase in temperature during a neutralisation reaction.
