Question

One example of acid reacting with dilute mineral acids

Answer 1

General equation is

Metal + acid → Salt + Hydrogen

For example let’s say you have magnesium and you added it to dilute hydrochloride acid, the result would be a solution containing salt of ph7 (magnesium chloride) and hydrogen will be given off during the reaction, reaction if finished when no more hydrogen is given off.

Test for hydrogen gas: Pop split test

Note: Not all metals react with acids, for the metal to react it must be more reactive than hydrogen in order to be able to displace it, this leaves us with a handful of metals which can’t react these include: copper,silver,gold,platinum.

e.g. concentrated hydrochloric acid, concentrated sulphuric acid, concentrated nitric acid, etc, Diluted Acid: When an aqueous solution has a relatively low percentage of acid dissolved in it, then it is a dilute acid. For e.g. dilute hydrochloric acid, dilute sulphuric acid, dilute nitric acid, etc.

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