ankit singh
Last Activity: 4 Years ago
W = Volume * density = 50 * 0.789 = 43.95 g
Wt. of compound (solute), w = 0.643 g
Mol. wt of benzene, M = 78
Mol. wt. of solute, m = ?
Depression in freezing point, ∆Tf = 5.51 – 5.03 = 0.48
Molal freezing constant, Kf = 5.12
Now we know that,
M – 1000 *Kf *w/W *∆Tf = 1000 *5.12 *0.643/43.95 *0.48 = 156.056