The regulations set forth in this ordinance shall be applicable within the corporate limits of the City of Newton Falls now or hereafter, as designated on the Official Zoning Map. All territory which may hereafter be annexed to the City of Newton Falls shall be considered to be in the R-1 Residential District until otherwise classified by the City Council acting on the recommendation of the Newton Falls Planning and Zoning Commission provided, however, that when the annexation is by petition, the petitioners may request a different zoning classification as a condition of the petition for annexation. In this event, the City Council may zone the property in accordance with the request contained in the petition by so providing in the annexation ordinance. Prior to City Council considering a request for a different zoning classification on the annexation petition, the provisions of Chapter 1161 concerning amendments to the zoning map shall apply.