Advertisements
Advertisements
प्रश्न
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will liberate ammonia gas when it reacts with ammonium chloride?
उत्तर
'P' reacts with ammonium chloride to produce ammonia due to the fact that it is highly basic at pH-13.
\[\ce{NH4Cl + NaOH -> NH3 + NaCl + H2O}\]
APPEARS IN
संबंधित प्रश्न
Higher the pH value of a solution, the more ______ it is.
Answer the following:
If pH value of solution ‘A’ is 8, pH value of solution ‘B’ is 7 and pH value of solution ‘C’ is 5.5 then:
Give the tests to identify Acids and Bases.
A solid compound ‘A’ decomposes on heating into ‘B’ and a gas ‘C’. On passing the gas ‘C’ through water, it becomes acidic. Identify A, B, and C.
Tomato is a natural source of which acid?
What is the pH range of our body?
An aqueous solution with pH = 1 is ___________.
Which of the following is used for the dissolution of gold?
Which of the following are present in a dilute aqueous solution of hydrochloric acid?
Assertion: Carbonic acid is a weak acid.
Reason: It ionised completely in an aqueous solution.
The graph given below depicts a neutralization reaction (acid + alkali → salt + water). The pH of a solution changes as we add an excess acid to an alkali.
Which letter denotes the area of the graph where both acid and salt are present?
Which of the following statements is correct about an aqueous solution of an acid and of a base?
- Higher the pH, stronger the acid
- Higher the pH, weaker the acid
- Lower the pH, stronger the base
- Lower the pH, weaker the base
Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained?
Explain the role of pH in our digestive system.
The white enamel coating of our teeth is ______.
You are given pure water to test the pH value using pH ______ paper. It shows colour.
List the role of each of the following in our digestive system:
- Hydrochloric acid
- Trypsin
- Muscular walls of stomach
- Salivary amylase
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will react with magnesium to liberate hydrogen gas?
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will contain molecules as well as ions?
