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3 years ago

BLauC)Why is sulphuric acid kept in the glass bottle? in fire extinguisher

Chemistry

1 answer:

ruslelena [56]3 years ago

6 0

Answer:

A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.

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Predict whether the following reactions will be exothermic or endothermic. Reaction A. N 2 ( g ) + 3 H 2 ( g ) ⟶ 2 NH 3 ( g ) Re

Marina86 [1]

Answer :

Exothermic reactions : A, B, D

Endothermic reaction : C

Explanation :

Endothermic reaction : It is defined as the chemical reaction in which the energy is absorbed from the surrounding.

In the endothermic reaction, the energy of reactant are less than the energy of product.

Exothermic reaction : It is defined as the chemical reaction in which the energy is released into the surrounding.

In the exothermic reaction, the energy of reactant are more than the energy of product.

As we know that, heat is released in the bond formation and heat is required in the bond breaking.

Reaction (A):

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

In this reaction, the more bonds are formed than the bond broken. That means, heat will be released. So, It is an exothermic reaction.

Reaction (B):

$S(g)+O_2(g)\rightarrow SO_2(g)$

In this reaction, burning of sulfur with oxygen takes place. That means, heat will be released. So, It is an exothermic reaction.

Reaction (C):

$2H_2O(g)\rightarrow 2H_2(g)+O_2(g)$

This reaction is a decomposition reaction. That means, heat will be required. So, It is an endothermic reaction.

Reaction (D):

$2F(g)\rightarrow F_2(g)$

In this reaction, formation of fluorine molecule from its atoms releases heat. So, It is an exothermic reaction.

Hence, the exothermic reactions are, A, B, D and endothermic reaction is, C

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Bezzdna [24]

Answer:

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2 years ago

BLauC)Why is sulphuric acid kept in the glass bottle? in fire extinguisher ​

BLauC)Why is sulphuric acid kept in the glass bottle? in fire extinguisher