pH values of some substances:

Hydrochloric Acid(HCL) - 0.0
Gastric Juices - 1.0
Lemon Juice - 2.3
Vinegar - 2.9
Wine - 3.5
Tomato Juice - 4.1
Coffee(black) - 5.0
Acid Rain - 5.6
Urine - 6.0
Rainwater - 6.5
Milk - 6.6
Pure water - 7.0
Blood - 7.4
Baking Soda Solution - 8.4
Borax Solution - 9.2
Toothpaste - 9.9
Limewater - 11.0
Sodium Hydroxide(NaOH) - 14.0