Question

Brass is a homogeneous substance of zinc and copper. why is it regarded as a mixture

Answer 1

Hey mate here is your answer in the attachment.

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Answer 2

Answer:

Thought the alloys are homogeneous mixture of metals which cannot be separated by any physical means yet they are regarded mixtures on account of the following reasons:

1. The composition of constituent metals can be varied in an alloy. For example, brass is an alloy of copper and zinc. If an alloy has 60% of copper and rest of zinc or 50% of copper and rest of zinc in either case, it is brass.

• 2. The individual metals in any alloy retain their chemical and physical properties. For example, if brass is treated with dilute sulphuric acid, then zinc in it, reacts to from zinc sulphate and hydrogen, but copper does not react.