sulfuric acid 1 h; Heating;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587193', constants.ctx, '0')">bromine</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3903637', constants.ctx, '0')">dinitrogen tetraoxide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1731042', constants.ctx, '0')">chloroform</a> <br /> <br /> &nbsp;