336 Mr. T. Tate on the Boiling-points of different Liquids 
Here the near coincidence of the results in the second and 
fourth columns shows that the relation of k and T may be very 
nearly represented by the formula 
1 
= 1°305 
ih — 33:25 k o . ° e e o e (6) 
Moreover, the near coincidence of the results in the second and 
fifth columns shows that T= iy very nearly, or that in this 
group of salts the temperatures of ebullition, T and T’, have a 
constant ratio to each other for all equal weights of salt. 
On a certain law connecting (approximately) the bovling-tempera- 
tures of particular salts in the same group with the chemical equi- 
valents of their bases, and in one instance with the equivalents 
of the entire salts. 
For the chlorides of sodium and barium we have found 
ee 
= for all equal weights of the salts ; 
but Equiv. of sodium 23°31 1 
= Aon = 5 Very nearly. 
Hquiv. of barium 68°66 3 
Hence it follows that, for all equal weights of salt, the boiling- 
temperatures, T" and T, of these two chlorides are (approximately) 
in the inverse ratio of the equivalents of their bases. 
Again, for the chlorides of sodium and potassium we have 
a 1:5, for all equal weights of the salts; 
but Equiv. of potassium _ 39:26 
Equiv. of sodium ~ 23°31 
Hence it appears that the same law holds (approximately) true 
for these two salts. 
In like manner, for the chlorides of calcium and strontium we 
have 
= 168, 
> 
7 1°85, for all equal weights of the salts ; 
but Equiv. of strontium — 43°75 —9.18 
Equiv. of calcium ~~ 20 ° ~~ 
In this case the approximation is not so close. 
For the nitrates of soda and potassa we have 
7 = "60, for all equal weights of the salts ; 
but Equiv. of soda 31°31 _ 
Equiv. of potassa 47:26 — o 
