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NEET-XII-Chemistry

02: Solutions

with Solutions - page 3
Qstn# B-25 Prvs-QstnNext-Qstn
  • #25
    Amongst the following compounds, identify which are insoluble, partially
    soluble and highly soluble in water?
    (i) phenol (ii) toluene (iii) formic acid
    (iv) ethylene
    glycol (v) chloroform (vi) pentanol.
    Ans : (i) Phenol (C6H5OH) has the polar group
    -OH and non-polar group -C6H5.
    Thus, phenol is partially soluble in water.
    (ii) Toluene
    (C6H5-CH3) has no polar
    groups. Thus, toluene is insoluble in water.
    (iii) Formic acid (HCOOH) has the polar group -OH and
    can form H-bond with water. Thus, formic acid is highly soluble in
    water.
    (iv) Ethylene glycol has polar -OH group and can form H-bond. Thus, it is
    highly soluble in water.
    (v) Chloroform
    is insoluble in water.
    (vi) Pentanol (C5H11OH) has polar -OH
    group, but it also contains a very bulky non-polar ­­­-C5H11 group. Thus, pentanol is partially soluble in water.