Leah B. GCSE Chemistry tutor, IB German tutor, GCSE History tutor, GC...

Leah B.

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Bsc Biochemistry and Psychology (Bachelors) - Exeter University

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About me

Hi!

My name is Leah and I am an undergraduate student studying Biochemistry and Psychology at Exeter. I am a bubbly and enthusiastic character who believes in engaging and active learning. Whilst my specialties are science, history and german, I am more than happy to help with uni applications and personal statements too. 

I greatly look forward to working with you :) 

Hi!

My name is Leah and I am an undergraduate student studying Biochemistry and Psychology at Exeter. I am a bubbly and enthusiastic character who believes in engaging and active learning. Whilst my specialties are science, history and german, I am more than happy to help with uni applications and personal statements too. 

I greatly look forward to working with you :) 

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Personally interviewed by MyTutor

We only take tutor applications from candidates who are studying at the UK’s leading universities. Candidates who fulfil our grade criteria then pass to the interview stage, where a member of the MyTutor team will personally assess them for subject knowledge, communication skills and general tutoring approach. About 1 in 7 becomes a tutor on our site.

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Qualifications

SubjectQualificationGrade
MathsInternational Baccalaureate (IB)5
EnglishInternational Baccalaureate (IB)6
ChemistryInternational Baccalaureate (IB)5
GermanInternational Baccalaureate (IB)7
HistoryInternational Baccalaureate (IB)6
DramaInternational Baccalaureate (IB)6

Subjects offered

SubjectQualificationPrices
ChemistryGCSE£18 /hr
GermanGCSE£18 /hr
HistoryGCSE£18 /hr
MathsGCSE£18 /hr
PhysicsGCSE£18 /hr
ScienceGCSE£18 /hr
ChemistryIB£20 /hr
GermanIB£20 /hr

Questions Leah has answered

When chlorine is bubbled through potassium bromide solution, the solution turns orange. Explain this.

This is because the reaction taking place is a displacement reaction, meaning that one element is being displaced by another. 

So what is being displaced?:

If you look at the periodic table, chlorine is more reactive than bromine and is therefore going to want to react more aggressively than bromine. Due to this, the chlorine is stronger and can take the place of bromine in the potassium bromide solution and now becomes potassium chloride solution. Since the bromine ions now float freely in the solution, there is a visible colour change to orange due to the natural orange/brown colour of bromine.

This is because the reaction taking place is a displacement reaction, meaning that one element is being displaced by another. 

So what is being displaced?:

If you look at the periodic table, chlorine is more reactive than bromine and is therefore going to want to react more aggressively than bromine. Due to this, the chlorine is stronger and can take the place of bromine in the potassium bromide solution and now becomes potassium chloride solution. Since the bromine ions now float freely in the solution, there is a visible colour change to orange due to the natural orange/brown colour of bromine.

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3 years ago

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