in the reaction 3br2 6co3 pow 2 3h2o to 5br pow bro3 pow

In the reaction $$3B{r_2} + 6CO_3^{2 - } + 3{H_2}O \to $$ $$5B{r^ - } + BrO_3^ - + 6HCO_3^ - $$

A. bromine is oxidised and carbonate is reduced.

B. bromine is reduced and water is oxidised

C. bromine is neither reduced nor oxidised

D. bromine is both reduced and oxidised

Answer : bromine is both reduced and oxidised

Solution :
$$3B{r_2} + 6CO_3^{2 - } + 3{H_2}O \to 5B{r^ - } + BrO_3^ - + 6HCO_3^ - $$
$$O.N.$$ of $$B{r_2}$$ changes from 0 to $$–1$$ and $$+5$$ hence it is reduced as well as oxidised.

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

View Answer

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 $$ion$$

View Answer

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

In the reaction $$3B{r_2} + 6CO_3^{2 - } + 3{H_2}O \to $$ $$5B{r^ - } + BrO_3^ - + 6HCO_3^ - $$

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

In the reaction $$3B{r_2} + 6CO_3^{2 - } + 3{H_2}O \to $$ $$5B{r^ - } + BrO_3^ - + 6HCO_3^ - $$

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

Practice More Releted MCQ Question on
Redox Reaction