Question

Q8. (A)- When zinc is added to sulphuric acid, precipitates are formed. True or False​

Answer 1

Answer:

Put a few pieces of granulated zinc into each of the three test tubes. Try to have approximately the same amount in each test tube.

Add 5 cm3 of dilute sulfuric acid to test tube 1. Note the rate of production of gas bubbles.

Add a few copper turnings to test tube 2. Make sure they are in contact with the zinc. Add 5 cm3 of dilute sulfuric acid and note the rate of production of gas bubbles.

Add 5 cm3 of dilute sulfuric acid to test tube 3. Then add about 1 cm3 of the copper sulfate solution using a dropping pipette. Note the rate of production of gas bubbles. Note what happens to the colour of the copper sulfate solution. Note what happens to the surface of the pieces of zinc.

Explanation:

Answer 2

Answer:

true

zn +h2so4- znso4+h2

znso4 is precipate