Q.

Number of sulphate ions produced in an aqueous solution containing 1 mole of Potash alum is

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a

6.023×1024

b

4.8184×1024

c

2.4092×1024

d

1.2046×1024

answer is C.

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Detailed Solution

K2SO4.Al2SO43.24H2O....Potash Alum ; K2SO4.Al2SO43.24H2O1mole⇌2K+2 moles+2Al3+2 moles+4SO42-4 moles+24H2O ; 1 mole ion  or 1 gram ion=NA ions=6.023×1023 ions ; Total ions/mole=8NA ;       K+ions/mole=2NA;    Al3+ions/mole=2NA;   SO42-ions/mole=4NA;
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Number of sulphate ions produced in an aqueous solution containing 1 mole of Potash alum is