Which equations represent precipitation reactions? more than one can be chosen. a. na2s + febr2 → 2nabr + fes b. mgso4 + cacl2 → mgcl2 + caso4 c. lioh + nh4i → lii + nh4oh d. 2nacl + k2s → na2s + 2kcl e. agno3 + nacl → agcl + nano3

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)