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Uses of Alkali Metals

Write the bal...

Question

Write the balanced equation for the following chemical reactions:
Sodium + Water $\to$ Sodium hydroxide + Hydrogen

2 N a (s) + 2 H_{2} O (l) \to 2 N a O H (a q) + H_{2} (g)

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N a (s) + H_{2} O (l) \to N a O H (a q) + H_{2} (g)

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2 N a (s) + 2 H_{2} O (l) \to N a O H (a q) + H_{2} (g)

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N a (s) + H_{2} O (l) \to 2 N a O H (a q) + H_{2} (g)

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Solution

The correct option is A $2 N a (s) + 2 H_{2} O (l) \to 2 N a O H (a q) + H_{2} (g)$
Sodium + Water $\to$ Sodium hydroxide + Hydrogen
$2 N a (s) + 2 H_{2} O (l) \to 2 N a O H (a q) + H_{2} (g)$

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Similar questions

H_{2} (g) + C l_{2} (g) \to 2 H C l (g); Δ H^{o} = - 44 K c a l

2 N a (s) + 2 H C l (g) \to 2 N a C l (s) + H_{2} (g);

Δ H = - 152 K c a l

N a (s) + 0.5 C l_{2} (g) \to N a C l (s); Δ H^{o} = ?

H_{2} (g) + C l_{2} (g) \to 2 H C l (g)

Δ H = - 44 K c a l

2 N a (s) + 2 H C l (g) \to 2 N a C l (s) + H_{2} (g)

Δ H = - 152 K c a l

N a (s) + \frac{1}{2} C l_{2} (g) \to N a C l (s)

Δ H = ?

2 NaCl(l) + 2 H_{2} O(l) \to 2 NaOH(l) + {Cl}_{2} (g) + H_{2} (g)

2 NaCl(aq) + 2 H_{2} O(aq) \to 2 NaOH(aq) + {Cl}_{2} (g) + H_{2} (g)

2 NaCl(aq) + 2 H_{2} O(l) \to 2 NaOH(aq) + {Cl}_{2} (aq) + H_{2} (aq)

2 NaCl(aq) + 2 H_{2} O(l) \to 2 NaOH(aq) + {Cl}_{2} (g) + H_{2} (g)

2 N a (s) + 2 H_{2} O (l) \to 2 N a O H (s) + H_{2} (g);

Δ H^{\circ} = - 281.9 k J

Δ H_{f}^{\circ} H_{2} O (l) = - 285.8 k J / m o l

Δ H \neq Δ U

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