Are neutralization reactions always exothermic ?

2 answers:

3 0

The heat of neutralization is the heat that evolved when an acid and a base react to a form a salt plus water. Neutralization reactions are generally exothermic and is negative.

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Sidana [21]3 years ago

3 0

Explanation:

Neutralisation reactions are not always exothermic. ... When an acid is neutralised by an alkali the reaction is exothermic.SInce strong acids and strong bases are completely dissociated in solution, no formal bonds are being broken. The formation of two very strong covalent bonds between hydrogen and the hydroxide ion is responsible for the neutralization reaction's exothermic character.

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To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?

Yuri [45]

Explanation:

The given data is:

The mass% of a solution is 7.

Mass of solution =450g

The mass of salt required can be calculated as shown below:

$mass percent =(mass of solute/mass of solution )x100\\$