geedot
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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!
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TSR Jessica
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Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.
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