Rank the following 0.10 M solutions in order of
increasing pH. (Use the appropriate <, =, or > symbol to
separate substances in the list.)
(a)    HBr, LiBr, HF, LiF
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(b)    HI, RbI, NH3,
NH4I
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(c)    C5H5NHNO3,
C5H5N, HNO3, LiNO3,
LiOBr, HOBr, LiOH