How will you find pH of lemon juice ?

The pH of lemon juice is

Lemon juice is

pH of lemon juice is _____.

pH of orange juice is

The p^(H) of lemon juice is

How does the pH of lemon juice change when a tablet of an antacid is dissolved in it ?

pH value of Lemon juice is

When a drop of orange juice is added to pure water , how the pH value will very for water ? If a drop of lemon juice is also added , will there be any more change in the pH value ?