The balanced chemical equation for the reaction between pcl5 and water is given below. if 3.45 moles of hcl are produced, how many moles of water reacted? pcl5(aq) + 4 h2o (l)→h3po4(aq) + 5 hcl (aq)

The  number  of   water   moles   reacted  is =  2.76  moles

        calculation

PCl5  + 4H2O = H3PO4 + 5 HCl

moles  of  HCl  produced  =  3.45  moles ,  by use of mole   ratio  between  H2O: HCl  which   is   4:5

the moles  of H2O  is  therefore =  3.45 x4/5 = 2.76  moles