Ph difference in orange juice versus baking soda

Question

Given that the pH of orange juice is 4.0 and the pH of baking soda is 8.0, how many times more acidic is the orange juice compared to the baking soda solution?

Answer 1

pH is a logarithmic scale. Which means that each increase in the value of the pH represents a tenfold change in acidity. I think that should help you answer the question.