Methyl Orange Is an Indicator with a K_a of 1 $\times$

question 72

Multiple Choice

Methyl orange is an indicator with a K_a of 1 $\times$ 10^-4.Its acid form,HIn,is red,while its base form,In^-,is yellow.At pH 6.0,the indicator will be

• A)red
• B)orange
• C)yellow
• D)blue
• E)not enough information

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