Which of the following reaction equations is-are properly balanced-i- Cl2 - 2NaBr - Br2 - 2NaClii- 2Na - O2- Na2Oiii- 2K - 2H2O - H2 - 2KOH

The correct option is C i and iii onlyEquation #160;i.) It is a balanced equation. No. of atoms of Cl_2 , Na and Br_2 are same(2 atoms) in b ...

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Byju's Answer

Standard IX

Chemistry

Balancing Chemical Equations by Partial Equation Method

Which of the ...

Question

Which of the following reaction equations is/are properly balanced?
i. $C l_{2} + 2 N a B r \to B r_{2} + 2 N a C l$
ii. $2 N a + O_{2} \to N a_{2} O$
iii. $2 K + 2 H_{2} O \to H_{2} + 2 K O H$

i only

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ii only

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iii only

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i and iii only

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i, ii and iii

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Solution

The correct option is C i and iii only
Equation i.) It is a balanced equation. No. of atoms of $C l_{2}$ , $N a$ and $B r_{2}$ are same(2 atoms) in both sides.
Equation ii.) Oxygen atoms are not balanced. LHS has 2 atoms but RHS has only 1 oxygen atom
Equation iii) It is a balanced equation. No. of atoms of potassium, Hydrogen and oxygen are same in both sides.

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Similar questions

Q. In the electrolysis of aqueous

N a C l

solution, side reactions taking place are :

(I)

2 O H^{-} + C l_{2} \to 2 O C l^{-} + H_{2} O

(II)

2 N a + 2 H_{2} O \to 2 N a O H + H_{2}

(III)

4 O H^{-} \to O_{2} + 2 H_{2} + 4 e^{-}

Select the correct alternate :

Q. Consider the following reactions:
I.

2 N a + 2 H_{2} O \to 2 N a O H + H_{2}

II.

2 N a O H + C l_{2} \to N a C l + N a O C l + H_{2} O

III.

4 O H^{-} \to O_{2} + 2 H_{2} O + 4 e^{-}

IV.

2 C l^{-} \to C l_{2} + 2 e^{-}

In the diaphragm cell used for the electrolysis of brine, the reactions that occur would include :

N a O H

can be prepared by two methods each with two steps having

100 %

extent.

I

2 N a + 2 H_{2} O ⟶ 2 N a O H + H_{2}

2 H_{2} + O_{2} ⟶ 2 H_{2} O

I I

2 N a + \frac{1}{2} O_{2} ⟶ N a_{2} O

N a_{2} O + H_{2} O ⟶ 2 N a O H

Which gives better yield?

Q. Which of the following will have two stereoisomeric forms only?
(I)

[C r (N O_{2})_{3} (N H_{3})_{3}]

(II)

K_{3} [F e (C_{2} O_{4})_{3}]

(III)

[C o C l_{2} (e n)_{2}]^{+}

(IV)

[C o B r C l (o x)_{2}]^{3 -}

Q. What happens when:

(Give chemical equations only)
(i) Methane reacts with nitric acid at

400^{o} C

?
(ii) Ethylene reacts with

H I

?
(iii) Ethyl alcohol is heated with conc.

H_{2} {S O}_{4}

140^{o} C

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Which of the following reaction equations is/are properly balanced?i. Cl2+2NaBr→Br2+2NaClii. 2Na+O2→Na2Oiii. 2K+2H2O→H2+2KOH

Which of the following reaction equations is/are properly balanced?
i. $C l_{2} + 2 N a B r \to B r_{2} + 2 N a C l$
ii. $2 N a + O_{2} \to N a_{2} O$
iii. $2 K + 2 H_{2} O \to H_{2} + 2 K O H$