Question

Part A 

Refer to Figure 13.4 in the textbook to determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature. Check all that apply.

\(50.0 \mathrm{~g} \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2}\) in \(95.0 \mathrm{~g}\) of water at \(10^{\circ} \mathrm{C}\)

\(15.0 \mathrm{~g} \mathrm{KClO}_{3}\) in \(115 \mathrm{~g}\) of water at \(25^{\circ} \mathrm{C}\)

\(45.0 \mathrm{~g} \mathrm{CaCl}_{2}\) in \(105 \mathrm{~g}\) of water at \(5^{\circ} \mathrm{C}\)

Answer 1

The answer is: 45.0 g cac12 in 105.0 g H20 at 5 deg C C1) 50.0 g Pb(No3)2 in 95.0 g H20 at 10 deg c = 50.0/95.0 x 100 52.6 g Pb(NO3)2 in 100 g H2o at 10 deg C From Pb(No3)2 curve, solubility is 45 g PbCNo3)2 in 100 g H20 at 10 deg c ->ill NOT completely dissolve (2) 15.0 g KClo3 in 115.0 g H20 at 25 degC -15. 0/115.0x 100 -13.0 g KClo3 in 100 g H20 at 25 deg c From KClo3 curve, solubility is 10 g KClo3 in 100 g H20 at 25 deg C -will NOT completely dissolve (3) 45.0 g Cac12 in 105.0 g H20 at deg C -45. 0/105.0 x 100 - 42.9 g cac12 in 100 g H20 at 5 deg c From cac12 curve, solubility is 60 g Cac12 in 100 g H20 at 5 deg c => WILL complet ely dissolve