Take cold water and Hot water in two test tubes, Add one or two drops

1.	Take cold water and Hot water in two test tubes, Add one or two drops of phenolphtha lein in it. Drop equally sized Mg ribbon in it.a. In which test tube pink colour occured sharply? b.Why did pink colour appear in that test tube so early? c. Which gas evolved out from both test tubes? d. Write balanced equation for the above mentioned reaction.
Answer» a. Pink colour occurred sharply in the test tube with hot water. b. Temperature is a factor that affects the rate of a reaction. When heated the kinetic energy of molecules increases and hence the rate of chemical reaction also increases which causes the pink colour to appear early. c. Hydrogen d. Mg(s) + 2H₂O(l) → Mg(OH)₂(aq) + H₂(g)

Take cold water and Hot water in two test tubes, Add one or two drops of phenolphtha lein in it. Drop equally sized Mg ribbon in it.a. In which test tube pink colour occured sharply? b.Why did pink colour appear in that test tube so early? c. Which gas evolved out from both test tubes? d. Write balanced equation for the above mentioned reaction.

Answer»

a. Pink colour occurred sharply in the test tube with hot water.

b. Temperature is a factor that affects the rate of a reaction. When heated the kinetic energy of molecules increases and hence the rate of chemical reaction also increases which causes the pink colour to appear early.

c. Hydrogen

d. Mg(s) + 2H₂O(l) → Mg(OH)₂(aq) + H₂(g)

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