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3 years ago

Choose the most acidic substance in the group.

Physics

2 answers:

Olenka [21]3 years ago

4 0

It would be lemon juice since it has the lowest pH

liraira [26]3 years ago

4 0

Answer: lemon juice, pH = 2.25

Explanation:

pH is the measure of acidity or alkalinity of a solution.

Acids are the substances which dissociate in water to give $H^+$ ions. Acids have pH raging from 1 to 6.9

$HX\rightarrow H^++X^-$

pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

Thus as pH and $H^+$ are inversely related, a solution having lower pH will have more amount of $H^+$ concentration and thus would be more acidic.

Thus lemon juice with lowest pH of 2.25 will have highest concentration of hydrogen ions and is most acidic.

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