Question

Few drops of dil. HCl were added to a beaker containing water. The temperature of the solution will​

Answer 1

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When few drops of phenolphthalein are added to a dilute solution of sodium hydroxide a pink colour is produced. What will be the colour of the final mixture when excess of HCl is added to it? (Justify your answer)

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The colour of the final mixture when added HCl to it

The colour (pink colour) will disappear.

the reaction between an acid and a base is known as neutralisation in this reaction and acid neutralizes the effect of acid and a base this reaction result in the formation of salt and water and energy in the form of heat is evolved.

Process:

fill half in test tube HCl and two drops of phenolphthalein to it start it continuously. next add Sodium Hydroxide till pink colour appears now add one drop of HCl the pink colour disappears so it is evident that when a solution is acidic it gives no colour this shows that neutralization reaction has occurred

Answer 2

Answer:

Solution

Verified by Toppr

The colour of the final mixture when

added HCl to it

The colour (pink colour) will

s)

disappear.

the reaction between an acid and a

base is known as neutralisation in this

reaction and acid neutralizes the

effect of acid and a base this reaction

a

result in the formation of salt and

water and energy in the form of heat

is evolved.