Question
Question 44 of 47 A substance with a pH of 3 was mixed with methyl orange indicator. Which of the colours below did the indicator change to?
Answer
4.1
(203 Votes)
Xavier
Professional · Tutor for 6 years
Answer
red
Explanation
## Step 1:Noting that pH is the measure of how acidic or basic a substance is. The problem specifies that we have a substance with a pH of 3, which could be categorised as highly acidic.## Step 2:Methyl orange indicator has a specific color change pattern according to the pH level in a solution. For a pH above 4.4, the color of the methyl orange indicator is yellow. For a pH below 3.1, the color of the methyl orange indicator changes to red.## Step 3:The pH of the substance given in this problem is 3, which is less than 3.1. Therefore, following methyl orange's behavior, the indicator changes to red when mixed with this substance.