Chemistry- formulas cards
June 2009: q23: Writing ionic equations:
Sr2+(aq) + 2Cl-(aq) + 2Na(aq) + SO4(2-)(aq) = SrSO4(s)+ 2Na(s) + 2Cl(g)
- Balance the equation using state symbols
- Any solids or gases stay as they were before showing ions.
- Cross out any elements that appear on either side of the equation.
Sr2+(aq) + SO4(2-) = SrSO4(aq)
2nd example: Write ionic equation for the reaction between Magnesium Chloride and Sodium hydroxide
- MgCl2(aq) + 2NaOH(aq) = 2NaCl(aq) + Mg(OH)2(s)
- Mg2+(aq) + 2Cl-(aq) + 2Na+(aq) + 2OH-(aq) = 2Na+(aq) + 2Cl-(aq) + Mg(OH)2(s)
- Mg2+(aq) + 2OH-(aq) = Mg(OH)2(s)
- Created by: aggy98
- Created on: 14-12-14 15:43
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