Question

which compound has the lowest solubility at 80 c?
a so2
b nacl
c kcl
d kclo3
part d
when nh4cl and hcl have the same solubility, what is that solubility?
a 65 g
b 60g
c 45 g
d 55 g
part e
at what temperature do nh4cl and hcl have the same solubility?
a 65 c

Explanation:

For the first question, we look at the solubility values of each compound at \(80^{\circ}C\) on the solubility - curve graph. The \(y\) - axis represents grams of solute per \(100gH_2O\). For \(SO_2\), \(NaCl\), \(KCl\), and \(KClO_3\), by observing the graph, \(SO_2\) has the lowest value at \(80^{\circ}C\).

For the second question, we find the point of intersection of the \(NH_4Cl\) and \(HCl\) solubility curves. The \(y\) - value (grams of solute per \(100gH_2O\)) at the intersection point is approximately \(65g\).

For the third question, we find the point of intersection of the \(NH_4Cl\) and \(HCl\) solubility curves. The \(x\) - value (temperature) at the intersection point is approximately \(65^{\circ}C\).

Answer:

First question: A. \(SO_2\)
Second question: A. \(65g\)
Third question: A. \(65^{\circ}C\)