7. According to Figure 1, which of the following solutions is the most acidic?
Answer and Explanation
Your Answer is
Correct Answer is C
Explanation
Look at figure 1, the most acidic solution has the lowest pH, it should be lemon juice
Passage II
An acid-base titration involves slowly adding a measured amount of acid to a solution containing a base and an indicator. The indicator, a dye, signals the endpoint (exact point where the acid has consumed all of the base) by changing colors as the solution goes from basic to acidic. The pH scale is a relative measure of the strength of acids and bases (see Figure 1). Table 1 shows the amount of acid required to reach the endpoint of different basic solutions containing various natural indicators.
Figure adapted from J. Dudley Herron et al., Heath Chemistry. ©1987 by D.C. Heath and Company.