A solution turns methyl orange red. It can turn the universal indicator to _____

Options

A. violet
B. blue
C. orange
D. green

Explanation

To solve the question "A solution turns methyl orange red. It can turn the universal indicator to _____", we can follow these steps:

### Step 1: Understand the behavior of methyl orange
Methyl orange is an acid-base indicator that changes color based on the pH of the solution. In acidic solutions (pH < 3.1), methyl orange turns red, while in neutral to basic solutions (pH > 4.4), it turns yellow.

### Step 2: Analyze the given information
The question states that the solution turns methyl orange red. This indicates that the solution is acidic, as only acidic solutions can cause methyl orange to change to red.

### Step 3: Determine the pH range of the solution
Since the solution is acidic, we can infer that its pH is less than 3.1. This means that it falls within the acidic range of the pH scale.

### Step 4: Understand the universal indicator
The universal indicator is a mixture of indicators that shows different colors at different pH levels. In acidic solutions (pH < 7), the universal indicator typically shows colors ranging from red to orange.

### Step 5: Predict the color change of the universal indicator
Since we established that the solution is acidic (pH < 3.1), the universal indicator will show a color that corresponds to this acidic range. Specifically, it will likely show orange or red.

### Step 6: Final answer
Given that the solution is strongly acidic (turning methyl orange red), the universal indicator will likely turn to orange.

Thus, the answer is: **orange**.

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