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Preparation from Manganese Dioxide

The following...

Question

The following are two reaction-schemes involving magnesium. find Compounds A to J based on the observations given are

M g O

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C O_{2}

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C a C O_{3}

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N O_{2}

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all of these correct

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Solution

The correct option is E all of these correct
The compound A is $M g O$
The compound B:is $M g C l_{2}$ .
The compound C is $M g C O_{3}$
The compound D is $C O_{2}$
The compound E is $M g O$
The compound F is $C a C O_{3}$
The compound G is $M g S O_{4}$
The compound His $M g (O H)_{2}$
The compound I is $M g (N O_{3})_{2}$
The compound J is $N O_{2}$
Mg reacts with oxygen to form MgO
$2 M g + O_{2} \to 2 M g O$
MgO reacts with dilHCl to form $M g C l_{2}$
$M g O + 2 H C l \to M g C l_{2} + H_{2} O$
$M g C l_{2}$ reacts with sodium carbonate to form white precipitate of magnesium carbonate.
$M g C l_{2} + N a_{2} C O_{3} \to 2 N a C l + M g C O_{3} ↓ (w h i t e)$ .
Magnesium carbonate on heating gives carbon dioxide gas.
$M g C O_{3} h a t - - \to M g O + C O_{2} ↑ .$
Carbon dioxide gas reacts with calcium hydroxide to form white ppt of calcium carbonate.
$C a (O H)_{2} + C O_{2} \to C a C O_{3} + H_{2} O$
Mg reacts with dil sulphuric acid to form colourless magnesium sulkphate.
$m g + H_{2} S o_{4} \to M g S O_{4} + H_{2}$
Magnesium sulphate reacts with naOH to form white ppt of magnesium hydroxide.
$M g S O_{4} + 2 N a O H \to N a_{2} S O_{4} + M g (O H)_{2}$
magnesium hydroxide reacts with nitric acid t form magnesium nitrate.
$M g (O H)_{2} + 2 H N O_{3} \to M g (N O_{3})_{2} + 2 H_{2} O$ .
The solution of magnesium nitrate on evaporation gives solid magnesium nitrate which on heating decomposes to form MgO and
nitrogen dioxide gas.
$M g (N O_{3})_{2} h e a t - - \to M g O + 2 N O_{2}$

Suggest Corrections

Similar questions

a i r Δ \to

H C l \to

N a_{2} C O_{3} \to

Δ \to

C a (O H)_{2} \to

d i l . H_{2} S O_{4} \to

N a O H \to

H N O_{3} \to

e v a p o r a t e \to

Δ \to

O_{2} + D

C a C O_{3} \to C a O + C O_{2}

E + C O_{2} \to F

N a C l + F \to A + N a H C O_{3}

E

F

Q_{A B} = 4800 J o u l e s

Q_{B C} = 1000 J o u l e s

Q_{C D} = 500 C a l

Q_{D A} = - 1000 C a l

h_{2} + {C l}_{2} \to 2 H C l

C a {C O}_{3} + 2 H C l \to C a {C l}_{2} + {C O}_{2} + H_{2} O

H C l

C a {C O}_{3}

C a C O_{3} . M g C O_{3} Δ - \to C a O + M g O + C O_{2}

C u C O_{3} . C u (O H)_{2} Δ - \to 2 C u O + H_{2} O + C O_{2}

A l_{2} O_{3} .2 H_{2} O Δ - \to A l_{2} O_{3} + 2 H_{2} O

2 C u_{2} S + 3 O_{2} Δ - \to 2 C u_{2} O + 2 S O_{2}

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