Question

Define reactivity series of metals. Arrange the metals K Mg Ca and Fe on the basis of reactivity series.
b) What do you observe when a magnesium ribbon is dipped in copper sulphate solution? (state two observations)
Give reasons for these observations. Write the chemical equation of the reaction involved.
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Answer 1

Answer:

Explanation:

Reactivity series is K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Hg > Ag > Au. The Arrangement of metals in the decreasing order of their reactivities is called the activity series of metals.

When magnesium ribbon is dipped into copper sulphate solution the colour of the solution fades away and magnesium ribbon gets coated with the brown layer . ... magnesium ,gold ,zinc, potassium.14-Feb-2020

Answer 2

Reactivity series of metals is the decreasing order of metals according to their reactivity.

K > Ca > Mg > Fe

When a magnesium ribbon is dipped in copper sulfate solution, we observe a reddish-brown precipitate of copper and we see the blue color of the solution has faded away.

This is due to the single displacement reaction that occurs.

Mg + CuSO4 -> Cu + MgSO4

Hope this helped!