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Grade: 12
         									What volume of 3 molar   is needed to oxidise of 8g of   get converted to NO :																		a) 						8 ml												b) 						16 ml																						c) 						32 ml												d) 						64 ml
5 months ago

## Answers : (2)

Arun
22576 Points
							It is defined as the addition of oxygen / electronegative element to a substance or removal of hydrogen / electropositive element from a substance.- whereine.g. $2H_{2}S(g) + O_{2}(g)\rightarrow 2S(s)+2H_{2}O(l)$  $\underset{77g}{HNO_{3}}+\underset{168g}{3Fe^{2+}}\rightarrow 3Fe^{3+}+side\, \,products$Now 168g of $Fe^{2+}\rightarrow 77g\, \, HNO_{3}$$8gFe^{2+}\rightarrow \frac{77\times 8}{168}=3.67g$Molarity (given)=3M$3=\frac{w\times 1000}{mV}$$V=\frac{3.67\times 1000}{mV}$$V=\frac{3.67\times 1000}{3\times 77}= 15.88ml\sim 16ml$

5 months ago
Khimraj
3008 Points
							HNO3 + 3 Fe2+ --------> 3 Fe3+ +side products77 g 168 g 168 g of Fe2+ forms HNO3 = 77g8 g of Fe2+ forms HNO3 = 77x8/168= 3.67 gmolarity = 3Mmolarity = w x 1000/Mx V3 = 3.67 x 1000/77x VV= 15.88 ml

5 months ago
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