the brown ring complex is formulated as fe h2o 5no so4 the

The brown ring complex is formulated as $$\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]S{O_4}.$$ The oxidation number of iron is

A. 1

B. 2

C. 3

D. 0

Answer : 1

Solution :
$$\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]S{o_4}$$ Let $$O.N.$$ of $$Fe$$ be $$x$$ then,
$$\eqalign{ & 1 \times \left( x \right) + 5 \times \left( 0 \right) + 1 \times \left( { + 1} \right) + 1\left( { - 2} \right) = 0 \cr & \therefore \,\,x = + 1 \cr} $$

Releted MCQ Question on
Physical Chemistry >> Redox Reaction

Releted Question 1

Which of the following represents a redox reaction?

A. $$NaOH + HCl \to NaCl + {H_2}O$$

B. $$BaC{l_2} + {H_2}S{O_4} \to BaS{O_4} + 2HCl$$

C. $$CuS{O_4} + 2{H_2}O \to Cu{\left( {OH} \right)_2} + {H_2}S{O_4}$$

D. $$Zn + 2HCl \to ZnC{l_2} + {H_2}$$

View Answer

Releted Question 2

Which reaction involves neither oxidation nor reduction?

A. $$CrO_4^{2 - } \to C{r_2}O_7^{2 - }$$

B. $$Cr \to CrC{l_3}$$

C. $$Na \to N{a^ + }$$

D. $$2{S_2}O_3^{2 - } \to {S_4}O_6^{2 - }$$

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Releted Question 3

$$Zn$$ gives $${H_2}$$ gas with $${H_2}S{O_4}$$ and $$HCl$$ but not with $$HN{O_3}$$ because

A. Zn acts as an oxidising agent when it reacts with $$HN{O_3}$$

B. $$HN{O_3}$$ is weaker acid than $${H_2}S{O_4}$$ and $$HCl$$

C. In electrochemical series, $$Zn$$ is above hydrogen

D. $$NO_3^ - $$ is reduced in preference to hydronium $$ion$$

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Releted Question 4

A compound of $$Xe$$ and $$F$$ is found to have $$53.5\% $$ of $$Xe.$$ What is oxidation number of $$Xe$$ in this compound ?

A. $$-4$$

B. $$0$$

C. $$+4$$

D. $$+6$$

View Answer

The brown ring complex is formulated as $$\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]S{O_4}.$$ The oxidation number of iron is

Releted MCQ Question on
Physical Chemistry >> Redox Reaction

Which of the following represents a redox reaction?

Which reaction involves neither oxidation nor reduction?

$$Zn$$ gives $${H_2}$$ gas with $${H_2}S{O_4}$$ and $$HCl$$ but not with $$HN{O_3}$$ because

A compound of $$Xe$$ and $$F$$ is found to have $$53.5\% $$ of $$Xe.$$ What is oxidation number of $$Xe$$ in this compound ?

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Redox Reaction

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The brown ring complex is formulated as $$\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]S{O_4}.$$ The oxidation number of iron is

Releted MCQ Question on Physical Chemistry >> Redox Reaction

Which of the following represents a redox reaction?

Which reaction involves neither oxidation nor reduction?

$$Zn$$ gives $${H_2}$$ gas with $${H_2}S{O_4}$$ and $$HCl$$ but not with $$HN{O_3}$$ because

A compound of $$Xe$$ and $$F$$ is found to have $$53.5\% $$ of $$Xe.$$ What is oxidation number of $$Xe$$ in this compound ?

Practice More Releted MCQ Question on Redox Reaction

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Physical Chemistry >> Redox Reaction

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Redox Reaction