Identify the double displacement reactions among the following: 1. kcl(aq) + agno3(aq) - agcl(s) + kno3(aq) 2. na2so4(aq) + bacl2(aq) →baso4(s) + 2nacl(aq) 3. h2so4((aq) + 2naoh(aq) na2so4((aq) + 2h2o(1) a) 1 and 3 only b) 2 and 3 only c) 1 and 2 only d) all of 1, 2, and 3 e) none of 1, 2, and 3

D

Explanation: in double decomposition the products formed are precipitate and the reaction is ionic in nature.

the answer is learned

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."