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mega mind blank on this question from the specimen paper! Please help! (Q10.1)
http://scienceabove.com/wp-content/u...alkthrough.pdf
Table 5 shows observations of changes from some test-tube reactions of aqueous solutions of compounds Q, R and S with five different aqueous reagents. The initial colours of the solutions are not given.
BaCL2+HCl:
Q: no change
R: no change
S: White ppt
AgNO3+HNO3:
Q: pale cream ppt
R: white ppt
S: no change
NAOH:
Q: white pt
R: white ppt, dissolves in excess NAOH
S: brown ppt
Na2CO3:
Q: white ppt
R: white ppt, bubbles of a gas
S: brown ppt, bubbles of a gas
HCL (conc):
Q: no change
R: no change
S: yellow solution
I literally can't do any of them so any help would be appreciated! First time user here!
http://scienceabove.com/wp-content/u...alkthrough.pdf
Table 5 shows observations of changes from some test-tube reactions of aqueous solutions of compounds Q, R and S with five different aqueous reagents. The initial colours of the solutions are not given.
BaCL2+HCl:
Q: no change
R: no change
S: White ppt
AgNO3+HNO3:
Q: pale cream ppt
R: white ppt
S: no change
NAOH:
Q: white pt
R: white ppt, dissolves in excess NAOH
S: brown ppt
Na2CO3:
Q: white ppt
R: white ppt, bubbles of a gas
S: brown ppt, bubbles of a gas
HCL (conc):
Q: no change
R: no change
S: yellow solution
I literally can't do any of them so any help would be appreciated! First time user here!
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