Options:
A.
B.
C.
D.
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Earlier discussion
4 older comments kept for context.
Enzzy
NaOH cannot be used because it is a base, so the base will react with the Conc. H2SO4 to produce salt and water, so therefore it will cause more injury to his skin, therefore the correct answer is cold water, This is because it will cool his skin and also make the Conc. H2SO4 dilute.
Enzzy
Sorry, the answer is NaOH
Geraldine chemistry mad
If someone is being poured H²SO⁴ it is good to apply sodium hydroxide a base to neutralize the acid . Tetra oxo sulphate (vi) is an acid so you neutralize it with a base problem solved 👍
Inazu
You are too good Nigerianscholar
Some said water of which i didn't believe action of H2O to H2So4 evolve alot of heat since oil of vitriol has great affinity for water it can even increase the corrosion process or dehydration process
Normally neutralization process elvolve heat aswell but its affinity for alkalis or base is less and so produce less heat so from the option B is crrt