chem mcQ

[hassam]

i wanted to know that is my method correct:
1 mol of suphite ion will react with two moles of metal ion...this can be found using the moles given in the question
1 mole sulphite ion releases 2 electrons......these electrons will reduce two mole metal ions
2M*3+ + 2 e ===>2M*2+

 

[hassam]

so anser is B

 

[hassam]

37 Which mixtures, on heating, produce the gas ND3?
D is deuterium
1 CaO(s) and ND4Cl(s)
2 CH3CN and NaOD in D2O
3 NDH3Cl and NaOD in D2O

 

[wahab305]

yeah your method is quite right but could led to confusion sometimes................