Question
What colour will be produced when methyl orange is added to dilute NaOH solution? What colour will be produced at the neutralization point if this solution is neutralized with dilute HCl?
Answer
When methyl orange is added to dilute NaOH solution, the solution will turn yellow.
At the neutralization point when the NaOH solution is neutralized with dilute HCl, the solution will change its color from yellow to orange. This is because methyl orange changes color at a pH range of 3.1 to 4.4, with a transition from yellow to orange. The point at which the solution changes from yellow to orange indicates that the solution has been neutralized, and the pH is around 7, which is the pH of neutral water.
