trichloroethene + chloride + A + H(+) <=> tetrachloroethene + AH2
trichloroethene + chloride + a + h(+) <=> tetrachloroethene + ah2
trichloroethene + chloride + A + H(+) <=> tetrachloroethene + AH2
trichloroethene + chloride + a + h(+) <=> tetrachloroethene + ah2