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Which of these statements is true about pH?

A A pH of 7 is more acidic than a pH of 8

Lower pH values indicate a more acidic solution, thus 7 is more acidic than 8. This occurs because acids increase [H+] of a solution, which lowers the pH of a solution. Thus, higher pH values would have a lower [H+].
Blood has a pH between 7.35 and 7.45, so it is slightly basic.