8.3%
2 :2:1
×78.6/12≈8;H:122×8.3%/1≈10
8.3)%/16≈1;分子式:C8H10O (1分)
分)
强吸收,示有-OH;1650~1900cm-1无吸收,无C = O (2分),中强吸收,示有苯环(1分)