Question :

Which gas is usually liberated when an acid reacts with a metal? Explain with a suitable example. 

Subject

Science

Standard

Class 10

Views

830

Asked By

Anaisha

Kirti
Answer / Solution

Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil.

HCL Hydrogen is evolved and salt zinc chloride is formed as:

Zn (g) + 2HCL (aq) → ZnCl2 (aq) + H2 (g) 

To test the presence of H2 gas, bring a burning splinter near the mouth of the test tube where H2 gas is released, the match stick bums with a pop sound.

Aanya
Answer / Solution

Mostly, hydrogen gas is usually librated when an acid reacts with a metal.

First, take the two pieces of zinc granules in the test tube and dil H2SO4 to it. Shake it and pass the gas produced into a soap solution. After that, the bubbles of soap solution are formed. These soap bubbles contain hydrogen gas.

The CHEMICAL EQUATION is of reaction is 

H2SO4 + Zn → ZnSO4 + H2 

Identification of as testis, if we burning candle near the soap bubbles, it will burn with a soap sound.

Advantages Of NCERT, CBSE & State Boards Solutions For All Subjects

  • All the NCERT Solutions have been prepared by academic experts having 10+ years of teaching experience.
  • They have prepared all the solutions in simple and easy language so that each and every student can understand the concepts easily.
  • All the solutions have been explained step to step-wise in details with better explanations.
  • Students can also use these question and answers for your assignments and in homework help.
  • All the solutions have been explained in detail and the answers have been compiled in a step-wise manner.
  • All the questions and answers are commonly prepared according to the Latest Syllabus of Board Education and Guidelines.
  • Students can know about the various types of questions asked in the exams with the help of these solutions.

Top Course Categories