BaSCXt. 



Crucible + ppt. -f paper ash ... ... =29-3650 



Crucible alone... ... ... =2 



0335 



Less paper ash ... ... ='0020 



BaSO 4 in 7 grammes ... ... = '3 1 5 



.\BaSO 4 in i gram... ... =-0045 = 45 percent. 



CaCO 3 . 



Crucible + ppt + paper ... = 29-3425 



Crucible alone ... ... = 29-3305 



0120 



Less paper ash ... ... ... = "002 



-ox (in 7 grams.) 

 .'.CaCO 3 from one gram ... =*ooi43=-i4 per cent. 



(3) CaSOt. 



Now, CaCO 3 gives CaSO 4 , /.from -14% of CaCO 3 we get 

 100 : 1 36:: -14 : #(=CaSO 4 ) 



# >I4X 136 T / O f c a so 



100 



Again, CaSO 4 gives BaSO 4 ,.Vi97 of CaSO 4 obtained, came from 



(36) (233^ ^i^ 33 = '33%< 



But, the total BaSO 4 ='45 per cent. 



From which take away -33 per cent, coming from the CaSO 4 

 Which leaves '12 per cent, as coming from the Na 2 SO 4 

 BaSO 4 gives Na 2 SO 4 , .Vi2 per cent, of BaSO 4 gives 



' I2X I42 =-o7 per cent of Wa 2 SO 4 



(5) Na Cl.- 



76-3 c. c. of AgNO 3 were required for 7 grammes 

 ,Mo f 9 c. c. for i gram 



