Which equation represents conservation of charge? 1. I- + 2e- → I2
2. 2I- → I2 + 2e-
3. Br2 → 2Br- + 2e-
4. Br + 2e- → Br-

*Pls explain your answer or I will report for guessing ​

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water