No reaction SiO2 H3PO4

NaCl solid SiCl4 liquid PCl5 liquid

ClF5

HCl(g) H2O + NaCl(aq) AgCl(s) + NaNO3(aq)  Cl–(aq) + OCl–(aq)Cl– + ClO3– ClO4– + Cl–  I2 + Cl–

This part of the scheme features the positive oxidation states of chlorine. Compounds containing positive oxidation states of chlorine may be prepared by

• Reaction with fluorine which in this case gives an interhalogen containing Cl(+5) and F(-1). ClF and ClF₃ also exist. All contain F(-1). The compound ClF₇ is not yet known. Presumably this compound is less stable because a chlorine atom is too small to fit seven fluorines around it.
• Autooxidation-reduction reactions in OH^–(aq) at room temperature or upon heating. As Cl₂ is in an intermediate oxidation state (0) it can act as an oxidant or a reductant giving products containing chlorine in a positive oxidation state (see above) and Cl^–.