CaCl2 is preferred to NaCl for clearing ice on roads particularly in very cold countries. This is because

Question

CaCl2 is preferred to NaCl for clearing ice on roads particularly in very cold countries. This is because (A)  CaCl2 is less soluble in H2O than NaCl  (B)  CaCl2 is hygroscopic but NaCl is not (C) eutectic mixture of CaCl2 text/H2O freezes at - 55° C while that of NaCl text/H2O freezes at -18° C  (D)  NaCl makes the road slippery but CaCl2 does not

Tardigrade Admin · Accepted Answer

CaCl2 is preferred to NaCl for clearing ice on roads particularly in very cold countries. This is because eutectic mixture of CaCl2 text/H2O freezes at a much lower temperature - 55° C while that of NaCl text/H2O freezes at - 18° C

Q. $C a C l_{2}$ is preferred to $N a Cl$ for clearing ice on roads particularly in very cold countries. This is because

$C a C l_{2}$ is less soluble in $H_{2} O$ than $N a Cl$

$C a C l_{2}$ is hygroscopic but $N a Cl$ is not

eutectic mixture of $C a C l_{2} / H_{2} O$ freezes at $- 55^{\circ} C$ while that of $N a Cl / H_{2} O$ freezes at $- 18^{\circ} C$

$N a Cl$ makes the road slippery but $C a C l_{2}$ does not