Question

K2Cr2O7+HCl=KCI+Crcl3+cl2+h2o ОВР СРОЧНО!!!!!!!!!!

Answer 1

K2Cr2O7+14HCl------->3Cl2+2KCl+2CrCl3+7H2O;

2Cl⁻-2e---->Cl2°;

2Cr⁺⁶+6e---->2Cr⁺³;