Question

What will the presence of H+ ions in a solution cause?

a bitter taste when consumed
a reaction with magnesium to release hydrogen gas
a slippery feeling
a reaction with an acid

Answer 1

The H+ will react with Magnesium to release hydrogen Gas under the equation Mg + 2H+ --> Mg(2+) + H2(g)

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Answer 2

Answer : The correct option is, a reaction with magnesium to release hydrogen gas.

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion,
`H^+`.

The properties of an acid are :

Acids are sour in taste.

The texture of an acid solution is sticky or corrosive.

It changes the color of the litmus paper to red.

It react with a metal to give compound and release hydrogen gas.

Base : It is a substance that has ability of donating hydroxide ion,
`OH^-`.

The properties of an base are :

Base are bitter in taste.

The texture of an base solution is slippery.

It changes the color of the litmus paper to blue.

It does not react with a metal.

As we per question, when the hydrogen ions present in the solution then the solution become more acidic in nature. That means the solution behave like an acid and follow the properties of an acid.

From the given options we conclude that, a reaction with magnesium metal to release hydrogen gas is the property of an acid. While the other options are the properties of a base.

Hence, the correct option is, a reaction with magnesium to release hydrogen gas.