Because the apple is soft from the lemon juice
Because a lemon is a citrus and an apple is not.....
you can prevent an apple from browning by adding lemon juice to it
You can use vinegar or apple cider as a substitute for lemon juice in apple pie.
A suitable substitute for lemon juice in apple pie is apple cider vinegar.
Apple juice will come up better because it is darker than lemon juice
Lemon Juice
The lemon juice keeps the apple from oxidizing.
lemons juice works
The pH level of an apple with lemon juice on it is generally around 3, due to the acidity of the lemon juice. Apples themselves are slightly acidic with a pH range of 3-4, but the addition of lemon juice further lowers the pH level.
none. lemon juice only comes from lemons, not apples.
The apple will be fresh longer. Since the acid in the apple makes the apple turn brown the lemon juice keeps it from doing that.
apple juice