Which of the species in the forward reaction below is acting as a base?
nh4+ + h2o ⇌ nh3 + h3o+
nh3
h2o
nh4+
h3o+

Explanation:

The definition of a Brønsted-Lowry base is that it is a substance that is capable of accepting a H+ ion using one of of its lone pairs to bond to the H+ ion. We can clearly see here that the water molecule accepts the H+ ion from NH4+ and becomes H3O+ and it is for that reason that in the forward reaction, water acts as a base.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i