In the chemical reaction- K2Cr2O7-XH2SO4-YSO2- K2SO4-CrSO43-zH2O- X- Y and Z are respectively-

The correct option is A 1, 3, 1 The unbalanced chemical equation is K_2Cr_2O_7+xH_2SO_4+ySO_2→ K_2SO_4+Cr(SO_4)_3+zH_2O The number of sulphate ions ...

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Standard XII

Chemistry

First Order Reaction

In the chemic...

Question

In the chemical reaction, $K_{2} C r_{2} O_{7} + X H_{2} S O_{4} + Y S O_{2} \to K_{2} S O_{4} + C r (S O_{4})_{3} + z H_{2} O$ , $X, Y$ and $Z$ are respectively,

1, 3, 1

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4, 1, 4

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3, 2, 3

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2, 1, 2

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Solution

The correct option is A $1, 3, 1$
The unbalanced chemical equation is $K_{2} C r_{2} O_{7} + x H_{2} S O_{4} + y S O_{2} \to K_{2} S O_{4} + C r (S O_{4})_{3} + z H_{2} O$
The number of sulphate ions on the two sides of the equation should b same. Hence, the coefficient $x$ of sulphuric acid on LHS is $1$ .
RHS contains $4$ S atoms and LHS contains $2$ S atoms. To balance the S atoms, the coefficient $3$ is added to $S O_{2}$ on LHS.
The number of H atoms on both sides of equation is balanced. Hence, the coefficient of water is $1$ .
The balanced chemical equation is $K_{2} C r_{2} O_{7} + H_{2} S O_{4} + 3 S O_{2} \to K_{2} S O_{4} + C r (S O_{4})_{3} + H_{2} O$ .
Hence, $x = 1, y = 3$ and $z = 1$ .

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In the chemical reaction, K2Cr2O7+XH2SO4+YSO2→K2SO4+Cr(SO4)3+zH2O, X,Y and Z are respectively,

In the chemical reaction, $K_{2} C r_{2} O_{7} + X H_{2} S O_{4} + Y S O_{2} \to K_{2} S O_{4} + C r (S O_{4})_{3} + z H_{2} O$ , $X, Y$ and $Z$ are respectively,