Ionic compounds
Abstract:
When ionic compounds are dissolved in water, they break apart into ions. In this lab the opportunity to mix two ionic solutions and observe the results was given. Some ions will remain dissolved and uncombined in the solution even when they are mixed with other ions. When other ions are mixed, they form compounds that appear as cloudy or grainy precipitates. The objective of this lab was to observe the formation of compounds and to write the names and formulas of ionic compounds. It is also to recognize and describe precipitate.
A grid was drawn as a data table to collect observations. In each box of the well plate, a pipette was used to add three drops of each of the specified chemicals. For example, well a contained three drops of AG+ and three drops of CO32- The pipette was rinsed in soapy and plain water to reuse them for each new solution. The new substance that was produced when the solutions were mixed was then observed. Each precipitate that formed was described. Terms such as milky, grainy, cloudy or gelatinous were used. A combination that did not form a precipitate was noted by writing "no reaction visible." The well plate was then thoroughly rinsed in the sink. All pipettes were rinsed using a beaker of soapy water and plain water; many other clean up procedures were then followed. Safety precautions were taken by wearing goggles and gloves at all times, care being taken when handling chemicals with pipettes and avoiding contact with the skin and clothing.
After experimenting it resulted that CO32- mixed with Ag+ was a milky white substance that looked like paint. CO32- mixed with Pb2+ was gelatinous; mixed with Ca2+ was gelatinous and cloudy; mixed with Fe3+ was grainy; mixed with Mg2+ was cloudy and last but not least mixed with Cu2+ was blue and cloudy. Cr2O72- mixed with Ag+ was a redish brown substance; when mixed with Pb2+ and Fe3+ both substances were gelatinous; with Ca2+ was a clear yellow substance; with Mg2+ was yellow and with
When ionic compounds are dissolved in water, they break apart into ions. In this lab the opportunity to mix two ionic solutions and observe the results was given. Some ions will remain dissolved and uncombined in the solution even when they are mixed with other ions. When other ions are mixed, they form compounds that appear as cloudy or grainy precipitates. The objective of this lab was to observe the formation of compounds and to write the names and formulas of ionic compounds. It is also to recognize and describe precipitate.
A grid was drawn as a data table to collect observations. In each box of the well plate, a pipette was used to add three drops of each of the specified chemicals. For example, well a contained three drops of AG+ and three drops of CO32- The pipette was rinsed in soapy and plain water to reuse them for each new solution. The new substance that was produced when the solutions were mixed was then observed. Each precipitate that formed was described. Terms such as milky, grainy, cloudy or gelatinous were used. A combination that did not form a precipitate was noted by writing "no reaction visible." The well plate was then thoroughly rinsed in the sink. All pipettes were rinsed using a beaker of soapy water and plain water; many other clean up procedures were then followed. Safety precautions were taken by wearing goggles and gloves at all times, care being taken when handling chemicals with pipettes and avoiding contact with the skin and clothing.
After experimenting it resulted that CO32- mixed with Ag+ was a milky white substance that looked like paint. CO32- mixed with Pb2+ was gelatinous; mixed with Ca2+ was gelatinous and cloudy; mixed with Fe3+ was grainy; mixed with Mg2+ was cloudy and last but not least mixed with Cu2+ was blue and cloudy. Cr2O72- mixed with Ag+ was a redish brown substance; when mixed with Pb2+ and Fe3+ both substances were gelatinous; with Ca2+ was a clear yellow substance; with Mg2+ was yellow and with