Question

gQ. What happens when acid is diluted?
Q. Why acid shows acidic behaviour in aqueous state?
Q. Complete this reaction:-
HCl + H2O-->......+.......(CBSE 2020)
Q. Which gas is evolved when acid react with metals? How can we test test this gas?
Q. Name two metals with which very dilute nitric acid releases hydrogen gas.
Q. Why nitric acid don't releases hydrogen when react with zinc metal?
Complete these questions in your science note book.Q. What happens when acid is diluted?
Q. Why acid shows acidic behaviour in aqueous state?
Q. Complete this reaction:-
HCl + H2O-->......+.......(CBSE 2020)
Q. Which gas is evolved when acid react with metals? How can we test test this gas?
Q. Name two metals with which very dilute nitric acid releases hydrogen gas.
Q. Why nitric acid don't releases hydrogen when react with zinc metal?
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Answer 1

Answer:

1. When an acid is diluted, the hydronium ions per volume decreases.

2. This is because  of dissociation of hydrogen ion in aqueous solution, an acid shows acidic behavior. ... Thus, because of dissociation of hydrogen ions; acid shows its acidic behavior.

3. HCl + H2O = H3O^+    + Cl

4. Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dilute sulphuric acid . hydrogen is evolved and salt zinc chloride is formed as: It can be tested by bringing a burning candle near the gas.

5. Magnesium and Manganese

6.  Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because HNO3 is a strong oxidising agent.

 hope this will help you !

Explanation: