Question

HELP FAST FIRST IS BRAINLYEST What is litmus paper used for?

  A. to determine if a chemical reaction has occurred
  B. to indicate if all the reactants have been used up
  C. to determine pH
  D. to detect the presence of water

Answer 1

To test PH. Blue paper turns red if it's under acidic conditions. Red paper turns blue under basic or alkaline ondoistins

Answer 2

the anser choice is c ph because when you dip it in a substance it changes color due to the pH