Question

An alloy contains copper and zinc.
Some of the zinc has become oxidised to zinc oxide.
What is the result of adding an excess of dilute sulfuric acid to the alloy?
A A blue solution and a white solid remains.
B A colourless solution and a pink /brown solid remains.
C The alloy dissolves completely to give a blue solution.
D The alloy dissolves completely to give a colourless solution.

Answer 1

@YoungChemist

Answer 2

c

Answer 3

The answer given is B, but i do not know how ?

Answer 4

When Zn0 reacts with H2S04 , Zinc Sulphate is formed

Answer 5

Zinc Sulphate is a colourless compound

Answer 6

It is soluble in water

Answer 7

That brown solid is copper

Answer 8

Hope this helps ! @sachin00007

Answer 9

but i thought zinc cannot displace hydrogen as zinc is below hydrogen in the reactivity series?