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

Leah B.

Currently unavailable: for regular students

Degree: 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 :) 

Subjects offered

SubjectLevelMy prices
Chemistry GCSE £18 /hr
German GCSE £18 /hr
History GCSE £18 /hr
Maths GCSE £18 /hr
Physics GCSE £18 /hr
Science GCSE £18 /hr
Chemistry IB £20 /hr
German IB £20 /hr

Qualifications

QualificationLevelGrade
MathsBaccalaureate5
EnglishBaccalaureate6
ChemistryBaccalaureate5
GermanBaccalaureate7
HistoryBaccalaureate6
DramaBaccalaureate6
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

No

Currently unavailable: for regular students

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 ...

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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2 years ago

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