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1) which of the follwoing pairs of cations cannot be separated by using an NaOH solution?
a) fe3+, al3+
b) cr3+, al 3+
c) sn2+, pb2+
d) cu2+, pb2+
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7 Answers
1skygirl:
naoh soluble salts are those which are amphoteric
al3+
pb2+
sn2+
aur kuchh thaa
abhishekh:
AL(OH)3 to white ppt hota hai
skygirl:
excess dalne pe
soluble hai
abhisheks:
ooh
skygirl:
haan
aur ek
zn2+
bus yeh chaar
aur
abhishek:
ok
skygirl:
nh3 soluble hai
cu2+
cd2+
zn2+
ag+
zn2+
aisi hai
jo dono me sol hain
aur fe3+ kisi me bhi nahi
cr3+ bhi
abhishek:
acha
itna yaad rakhna padega naa
skygirl:
haan :P
aur kuchh nahi :P
abhisheks:
dono me soluble kaun hai
skygirl:
zn2+