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meawinner
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Hi I got given these 2 planning q's to do by my teacher but I don't have a clue how to do the actual experiment. If i knew that much then I would b able to write about it. Could n e 1 help me please
Plan an experiment that would enable you to measure the molar enthalpy change of the reaction between magnesium metal in different concentrations of dilute hydrochloric acid.
I thought about this question and I thought could it be the calorimeter with the zinc and the cup and the thermometer but then it says diff concentrations of HCl so i got a bit confused so could some1 please help me.
Plan an experiment to purify solid H by recrystallisation.
You are required to plan an experiment by which a pure sample of H could be prepared, from an impure sample of solid, ready for a melting temperature determination. Your method will involve recrystallising H from a suitable solvent. Assume that you have access to data giving the solubility of H in different solvents at different temperature.
I looked at this question and the first thing that hit me was what is recrystalisation? and what has it got to do with the solubilities? Please help me!
Thank you for anyone who may be able to help me.
meawinner
Plan an experiment that would enable you to measure the molar enthalpy change of the reaction between magnesium metal in different concentrations of dilute hydrochloric acid.
I thought about this question and I thought could it be the calorimeter with the zinc and the cup and the thermometer but then it says diff concentrations of HCl so i got a bit confused so could some1 please help me.
Plan an experiment to purify solid H by recrystallisation.
You are required to plan an experiment by which a pure sample of H could be prepared, from an impure sample of solid, ready for a melting temperature determination. Your method will involve recrystallising H from a suitable solvent. Assume that you have access to data giving the solubility of H in different solvents at different temperature.
I looked at this question and the first thing that hit me was what is recrystalisation? and what has it got to do with the solubilities? Please help me!
Thank you for anyone who may be able to help me.
meawinner