Question

which of the following metal will change blue colour of copper sulphate solution

silver, mg ,Fe , pt ,zn​

Answer 1

Explanation:

zn is the answer

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Answer 2

Answer:

Of the given metals, Magnesium (Mg), Iron ( Fe) and Zinc( Zn) will change blue colour of copper sulphate solution.

Explanation:

•The reactivity series of elements, as shared in the image shows the reactivity of elements.

•The elements higher in the reactivity series are more reactive as compared to elements lower in the reactivity series.

• It also shows that if an element is higher than the other elemet, it will replace the lower element in its salt. This type of reaction is called Displacement reaction.

•By observing the sequence of elements, we can observe that Mg, Zn, Fe are more reactive as compared to Cu and Silver ( Ag ) and Platinum ( Pt ) are less reactive than Cu.

• So, Mg, Zn and Fe will replace Cu in its sslt while Pt and Ag will not.

• Blue colour of Copper Sulphate solution is due to Cu ions. When it is replaced by Fe, Mg and Zn, Blue colour will also be replaced.