Science
Dil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.
Phy & Chem Changes
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Answer
Two arguments in support of chemical change in this case are:
- Change in colour — Zinc metal displaces hydrogen gas and a new black coloured product zinc chloride is formed.
- Evolution of gas — Bubbles are seen which shows a gas (hydrogen gas) is released.
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