Identify the indicator that can be used at the lowest pH.?

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a.crystal violet ph <0.8 yellow : ph > 2.6- blue violet

b.alizarin ph <5.8 yellow ph > 7.2 red

c.phenplphthaleinph <8.2 colourless ph > 9.8 red / violet

d.alizarin yellow r ph <10.0 light yellow ph> 12.1 brown/yellow

e.thymol blueph <8.0 yellow ph > 9.6 blue.

crystal violet can used determine ph between 0.8 , 2.6
there oither indicators can used ph low 0. malachite green- ph 0.00 yellow , ph > 2.6 - green/blue.

a.crystal violet
b.alizarin
c.phenplphthalein
d.alizarin yellow r
e.thymol blue


Science & Mathematics Chemistry Next



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