Of the following chemical reactions is best clasified as an acid-base reaction?

a
2hgo→2hg + o2

b
na2so4 + bacl2 →baso4 + 2nacl

c
zn + 2agno3 →zn(no3)2 + 2ag

d
h2so4 +2koh →k2so4 + 2h2o

d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

Explanation:

a . 2HgO → 2Hg + O₂,

It is a decomposition reaction, that HgO is decomposed to give Hg and O.

b . Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl,

It is a double replacement reaction where two salts replaces their cations and anions with each others producing 2 new salts.

c . Zn + 2AgNO₃ → Zn(NO₃)₂ + 2Ag,

It is a single replacement reaction, that Zn replaces Ag from its salt.

d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

It is acid-base reaction "neutralization reaction" where H₂SO₄ (acid) reacts with KOH (base) producing K₂SO₄ (salt) and water.

d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

i wish i could but this one is weird give me abc and i can solve it.