Question

Plz ans it correctly.. Plz

Answer 1

hi there,

name - pH - colour - nature

Saliva (before meal) - 7.4 - neutral - neutral.

Saliva (after meal) - 5.8 - dark green - acid

lemon juice - 2.5 - vevid red - acid

colourless areated drink - 6.0 - orange - acid

carrot juice - 5.6 - yellow - acid

coffee - 5.0 - green -acid

tomato juice - 4.1 - light green - acid

tap water - 6.5 to 8.5 - acid / base

1M NaOH - 14 - dark purple - base

1M HCL - 1 - red - acid