Question

Il 10 mL of H2S04 is mixed with 10 ml of Mg(OH)2the same
concentration, the resultant solution will give the following colour with
universal indicator :
(A) Red
B) Yellow
(C) Green
(D) Blue​

Answer 1

We know that on dissociation, Hydrogen Sulphate produces two $H^{+}$ ions;

$H_{2}SO_{4}$  ⇄  $2H^{+}$ + $SO^{2-}_{4}$

On the other hand, Magnesium Hydroxide produces two Hydroxide ions after undergoing dissociation,

$Mg(OH)_{2}$  ⇄ $Mg^{2+}$ + $2HO^{-}$

So, when these two solutions are mixed together in proper proportions,

$H_{2}SO_{4} + Mg(OH)_{2}$ → $2H_{2}O + MgSO_{4}$

This is because, when a strong acid (Hydrogen sulphate, in this case) and a strong base (here, magnesium hydroxide) reacts with each other, it results in the formation of salt (magnesium sulphate) and water.

Hence, the resultant solution of salt and water will give green colour on the universal indicator.

Ans) (d) Green

A similar solution to the given question is here - https://brainly.in/question/15823495

Answer 2

The resultant solution will give the following colour with  universal indicator :

(C) Green

- The reaction is given as:

H2S04 + Mg(OH)2 → MgS04 + 2H2O

- As H2S04 is a strong acid and Mg(OH)2 is a strong base, complete neutralization will take place.

- As their volume and concentration is also same, so the resultant solution will be neutral.

- Neutral solutions give green colour on treatment with universal indicator'.