Question

Bromothymol blue indicator changes color from yellow at a pH of 6.0 to blue at a pH of 7.6. Methyl red indicator changes color from red at a pH of 4.4 to yellow at a pH of 6.2. A sample of saliva having [H3O+] = 6.310 10-7would impart a ________ color to bromothymol blue and a ________ color to methyl red.

Answer

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