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Stoichiometric Calculations

Chile salt pe...

Question

Chile salt petre is a natural source of $N a N O_{3}$ which also contains $N a I O_{3}$ . The $N a I O_{3}$ can be used as a source of iodine produced in the following reactions:
$I O_{3}^{-} + 3 H S O_{3}^{-} ⟶ I^{-} + 3 H^{+} 3 S O_{4}^{2 -}$ ... (i)
$5 I^{-} + I O_{3}^{-} + 6 H^{+} ⟶ 3 I_{2} (s) + 3 H_{2} O$ ... (ii)
$1.00$ L of the starting solution which contains $5.80$ g $N a I O_{3}$ per litre is treated with stoichiometric quantity of $N a H S O_{3}$ . Further, a quantity of the starting solution is added to the reaction mixture to bring about the second reaction. $[I = 127, N a = 23, S = 32]$
How many grams of $N a H S O_{3}$ are required in step (i)?

A

5.80

g

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B

17.4

g

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C

9.14

g

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D

3.0

g

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Solution

The correct option is C $9.14$ g
$5.8 g N a I O_{3} = \frac{5.8}{198} m o l N a I O_{3}$

$∴ N a H S O_{3} = 3 \times \frac{5.8}{198} m o l$

$= 3 \times \frac{5.8}{198} \times 104 g$

$= 9.14 g$ .

Hence, the correct answer is $(C)$ .

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Similar questions

Chile salt petre is a natural source of

N a N O_{3}

which also contains

N a I O_{3}

N a I O_{3}

can be used as a source of iodine produced in the following reactions:

I O_{3}^{-} + 3 H S O_{3}^{-} ⟶ I^{-} + 3 H^{+} 3 S O_{4}^{2 -}

5 I^{-} + I O_{3}^{-} + 6 H^{+} ⟶ 3 I_{2} (s) + 3 H_{2} O

1.00

L of the starting solution which contains

5.80

N a I O_{3}

per litre is treated with stoichiometric quantity of

N a H S O_{3}

. Further, a quantity of the starting solution is added to the reaction mixture to bring about the second reaction.

[I = 127, N a = 23, S = 32]

How many equivalents of

I O_{3}^{-}

are used in step (ii)?

Chile salt petre is a natural source of

N a N O_{3}

which also contains

N a I O_{3}

N a I O_{3}

can be used as a source of iodine produced in the following reactions:

I O_{3}^{-} + 3 H S O_{3}^{-} ⟶ I^{-} + 3 H^{+} 3 S O_{4}^{2 -}

5 I^{-} + I O_{3}^{-} + 6 H^{+} ⟶ 3 I_{2} (s) + 3 H_{2} O

1.00

L of the starting solution which contains

5.80

N a I O_{3}

per litre is treated with stoichiometric quantity of

N a H S O_{3}

. Further, a quantity of the starting solution is added to the reaction mixture to bring about the second reaction.

[I = 127, N a = 23, S = 32]

How many equivalents of

I O_{3}^{-}

are present in one mole of

N a I O_{3}

Chile salt petre is a natural source of

N a N O_{3}

which also contains

N a I O_{3}

N a I O_{3}

can be used as a source of iodine which produced in the following reactions:

I O_{3}^{-} + 3 H S O_{3}^{-} ⟶ I^{-} + 3 H^{+} 3 S O_{4}^{2 -}

5 I^{-} + I O_{3}^{-} + 6 H^{+} ⟶ 3 I_{2} (s) + 3 H_{2} O

1.0

L of the starting solution which contains

5.80

N a I O_{3}

per litre is treated with stoichiometric quantity of

N a H S O_{3}

. A further quantity of the starting solution is added to the reaction mixture to bring about the second reaction.

(Atomic mass of

I = 127, N a = 23, S = 32

___________ equivalents of

I O_{3}^{-}

are present in one mole of

N a I O_{3}

Chile salt petre is a natural source of

N a N O_{3}

which also contains

N a I O_{3}

N a I O_{3}

can be used as a source of iodine which produced in the following reactions:

I O_{3}^{-} + 3 H S O_{3}^{-} ⟶ I^{-} + 3 H^{+} 3 S O_{4}^{2 -}

5 I^{-} + I O_{3}^{-} + 6 H^{+} ⟶ 3 I_{2} (s) + 3 H_{2} O

1.0

L of the starting solution which contains

5.80

N a I O_{3}

per litre is treated with stoichiometric quantity of

N a H S O_{3}

. A further quantity of the starting solution is added to the reaction mixture to bring about the second reaction.

(Atomic mass of

I = 127, N a = 23, S = 32

What additional volume (in L) of the starting solution must be added in step (ii)?

Chile saltpetre is a natural source of

N a N O_{3}

which also contains

N a I O_{3}

N a I O_{3}

can be used as a source of iodine produced in the following reactions:

{I O_{3}}^{-} + 3 {H S O_{3}}^{-} \to I^{-} + 3 H^{+} + 3 {S O_{4}}^{2 -}

5 I^{-} + {I O_{3}}^{-} + 6 H^{+} \to 3 I_{2} (s) + 3 H_{2} O

1.0

L of the starting solution which contains

5.80

N a I O_{3}

is treated with stoichiometric quantity of

N a H S O_{3}

. Further, a quantity of the starting solution is added to the reaction mixture to bring about the second reaction

[I = 127, N a = 23, S = 32]

How many equivalents of

{I O_{3}}^{-}

are used in the above reaction in step (ii)?

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