Question

for a dilution of acid , acid is added into water but not water into acid

Answer 1

Because the reaction will turn into an explosive one which can be fatal for the person doing the experiment

Answer 2

~*HEY FRIEND*~
~* THE ANSWER OF YOUR QUESTION IS..*~

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FOR DILUTION ACID IS ADDED TO WATER BECAUSE IT IS HIGHLY EXOTHERMIC REACTION.

IF WATER IS ADDED TO ACID THEN DUE TO EXPLOSION
TEST TUBE WILL BREAK..AND ACID SPRAY ON OUR BODY...AND CAUSE HARM.

HOPE IT WILL HELP YOU