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Balanced Chemical Equation

Write the bal...

Question

Write the balanced chemical reaction for the reaction of magnesium with hot water.

A

2 M g + 3 H_{2} O \to 2 M g O H + 3 H_{2}

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B

M g + 2 H_{2} O \to M g (O H)_{2} + H_{2}

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C

2 M g + 3 H_{2} O \to 3 M g O H + 3 H_{2}

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D

M g + 3 H_{2} O \to 2 M g O H + 3 H_{2}

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Solution

The correct option is B $M g + 2 H_{2} O \to M g (O H)_{2} + H_{2}$
Magnesium reacts with hot water to form magnesium hydroxide and hydrogen.
$M g + 2 H_{2} O \to M g (O H)_{2} + H_{2}$

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Q. The following equilibrium are given

N_{2} + 3 H_{2} \to 2 N H_{3} - K_{1}

N_{2} + O_{2} \to 2 N O - K_{2}

H_{2} + 1 / 2 O_{2} \to H_{2} O - K_{3}

The equilibrium constant of reaction,

3 H_{2} + 5 / 2 O_{2} \to 2 N O + 3 H_{2} O

K_{1}, K_{2}, K_{3}

Q. The following are the equilibria

N_{2} + 3 H_{2} ⇌ 2 N H_{3} K_{1}

N_{2} + O_{2} ⇌ 2 N O K_{2}

H_{2} + \frac{1}{2} O_{2} ⇌ H_{2} O K_{3}

...(iii)
Then the equilibrium constant

K_{4}

for the reaction

2 N H_{3} + \frac{5}{2} ⇌ 2 N O + 3 H_{2} O

Q. The equilibrium constant of the following are:

N_{2} + 3 H_{2} ⇌ 2 N H_{3}; K_{3}

N_{2} + O_{2} ⇌ 2 N O; K_{2}

H_{2} + \frac{1}{2} O_{2} ⇌ H_{2} O; K_{1}

The equilibrium constant (K) for the reaction,

2 N H_{3} + 5 / 2 O_{2} K ⇌ 2 N O + 3 H_{2} O

Q. The equilibrium constants of the following are:

N_{2} + 3 H_{2} ⇌ 2 N H_{3}; K_{1}

N_{2} + O_{2} ⇌ 2 N O; K_{2}

H_{2} + \frac{1}{2} O_{2} \to H_{2} O; K_{3}

The equilibrium constant

(K)

of the reaction:

2 N H_{3} + \frac{5}{2} O_{2} K ⇌ 2 N O + 3 H_{2} O

The following equilibria are given: $N_{2}$ +3 $H_{2}$ $⇋$ $2 N H_{3}$ $K_{1}$ ; $N_{2}$ + $O_{2}$ $⇋$ 2NO $K_{2}$ ;
$H_{2}$ + $\frac{1}{2}$ $O_{2}$ $⇋$ $H_{2} O K_{3}$ ;

The Equilibrium constant for the reaction $2 N H_{3}$ + $\frac{5}{2}$ $O_{2}$ $⇋$ 2NO + 3 $H_{2}$ O in terms of $K_{1}$ , $K_{2}$ and $K_{3}$ is:

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