1-5. For the given unbalanced reaction CaSO4 + NaCl → CaCl2 + Na2SO4

• A. How many CaSO4 in kg is required for producing 1 mole of Na2SO4? Assume NaCl in excess.
• B. 136 kg
• C. 156 kg
• D. 176 kg
• E. 196 kg