Question

Investigation 5: Unknown Ionic Compound the quality control lab. The ds in separate bottles on the ing these compounds so they can be lab groups, one per need to explain the chemical and You have found a long-forgotten shelf in the back of the storeroom at the quality co shelf is just labeled ionic compounds and there are many white solids in separate shelt. You and your team have been tasked with identifying these compounds so they disposed of safely. The unknown compounds will be distributed among the lab groups, o group. In addition to identifying the compound, you will also need to explain the chemical physical properties so that you can make predictions as to how it would behave during a disposal in a landfill. For example, if you know the solubility of the compound, you can some indication of if the compound will leach out of a landfill during heavy rain. Knowing the reactivity, you can make some recommendations about safe disposal and longevity of the compound in the environment. If it is not very reactive, it may it in the landfill for a long time. Overall Goals: 1. Identify the unknown compound. 2. Discover as many chemical and physical properties of the compound as you reasonably can in the laboratory setting. 3. Devise two syntheses of the compound and compare them for safety and potential yield of the compound NOTES: Follow all standard safety precautions including wearing safety goggles and appropriate clothing Dispose of any waste in the appropriately labeled waste container unless otherwise directed by your laboratory instructor. Week 1: Identification of the Unknown Compound In order to help you identify your unknown compound, it will be limited to one of the following possibilities: Naci Na2SO4 r CaCl2 MgSO4 K NO3 KCI Ca(NO3)2 MgCO3 (NH4)2SO4 V NHACI CH3CO2Na CaCO3 K2SO4V Na2CO3 MgCl2 Samples of each of these compounds will be available in the lab with the following additional reagents: 6 M HNO3 6 M NaOH 0.1 M AgNO3 Conc. H2SO4 ethanol 0.1 M BaCl2 6 M HCI pH paper

i dont even know what to do im stuck would appericate some help !

Answer 1

1. Identification of Nach (a) White in color - (by when burnt in flame, yellow colos flame is observed ( Nad & Ag No Agel + Nanoz Nael is soluble in white plot.) 2. Identification of Na, soul- (a white solid, Highly soluble in the 1 (6) It is neutral salt :: No change in pH paper (6) Insoluble in ethanol (as Nasou + bal Ba Soy + 2 Nay (white pht.) 3 Identification of Why clf (a) Basic in nature turns red litmus blue. (b) soluble in ethanol & tho I is why I & Ag Noz Agd & N Hy No3 white ppt (d) when pinch of NHul is subbed over finger (gloves I ammorical smell appears (6) Insoluble in My Soul 4. K ol Identification - (a) It is white solid. mater-soluble (6) No change in pH paper " k sou + Ball Basou takel 1 (ds Insoluble in Ethanal. 5. Identification of [(NH4), sa- (as Insoluble in athanal (6) Turns Blue litmus red. Sony 56th + Bl Baso + 2NH₂ C white ppt) (white ppt.)