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Sagot :
Answer:
See explanation
Explanation:
The reaction equation is as follows;
Mg(s) + 2HCl(aq) -------> MgCl2(aq) + H2(g)
Firstly, the appearance of bubbles of gas shows that a gas is evolved in the reaction.
Secondly, If we hold up the flame of a butane fireplace lighter above the appearing hydrogen bubbles, we will hear audible pops as the hydrogen gas ignites showing that a combustible gas is produced in the reaction.
Lastly, as the reaction proceeds, the magnesium ribbon disappears as MgCl2 is formed. If a set up such as the image attached is used, hydrogen gas is collected over water.
Image credit: RSC education
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