Advertisements
Advertisements
प्रश्न
What happens to the temperature of the solution when an acid is neutralised?
Advertisements
उत्तर
The temperature of the solution increases because neutralisation is an exothermic reaction that releases heat.
APPEARS IN
संबंधित प्रश्न
A solution turns red litmus blue. Its pH is likely to be ______.
Write a balanced chemical equation for the reaction of sodium hydroxide solution with iron (III) chloride solution
Give the names and formulae of two strong acids.
Name one natural source of the following acid:
Oxalic acid
What is produced if an acid is added to a base?
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.
- Name the natural indicator present in curry stain.
- Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
- What is the nature of soap (acidic/basic) as shown by the indicator present in curry stain?
What happens during a bee sting? What is its remedy?
Which acid is produced in our stomach? What happens if there is an excess of acid in the stomach? How can its effect be cured?
Give two examples of the following:
hydracids
Name the acid present in vinegar.
Give one example in the following case:
A hydrogen containing compound which is not an acid.
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
Give the appropriate term defined by the statements given below :
The substance that releases hydronium ion as the only positive ion when dissolved in water.
Give the name and formula of two : Weak dibasic acids
Choosing the correct words given in brackets, complete the sentence given below:
A(n) ______ (acid/basic) salt is one in which the hydrogen of an acid has been partially replaced by a ______ (metal/non-metal).
Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
- Find out acid A and acid B.
- Which acid is called the King of Chemicals?
Which of the following set of substances contain acids?
Complete the following equation.
HCl + H2O → ______ + ______.
Complete the following equation.
Zn + ______ → Na2ZnO2 + H2 ↑
A metal 'M' on reacting with dilute acid liberates a gas 'G'. The same metal also liberates gas 'G' when reacts with a base.
- Write the name of gas 'G'.
- How will you test the presence of this gas?
- Write chemical equations for the reactions of the metal with (1) an acid and (2) a base.
