AQA Jan 2011 Paper 1 Q2 (with explained solutions) |

Skip to content

AQA Jan 2011 Paper 1 Q2

Answers available below

do not write outside the box a indium is in group in the periodic table and exists as a mixture of the isotopes in and in use your understanding of the periodic table to complete the electron configuration of indium s s p s p s d p mark b a sample of indium must be ionised before it can be analysed in a mass spectrometer b i state what is used to ionise a sample of indium in a mass spectrometer mark b ii write an equation including state symbols for the ionisation of indium that requires the minimum energy mark b iii state why more than the minimum energy is not used to ionise the sample of indium mark b iv give two reasons why the sample of indium must be ionised reason reason marks wmp jan chem do not write outside the box c a mass spectrum of a sample of indium showed two peaks at m z and m z the relative atomic mass of this sample of indium is c i give the meaning of the term relative atomic mass marks c ii use these data to calculate the ratio of the relative abundances of the two isotopes marks extra space d state and explain the difference if any between the chemical properties of the isotopes in and in difference in chemical properties explanation marks e indium forms a compound x with hydrogen and oxygen compound x contains indium and hydrogen by mass calculate the empirical formula of compound x marks turn over wmp jan chem

Show answer

mark scheme general certificate of education a level chemistry unit foundation chemistry january question marking guidance mark comments a d s p in any order b i b ii b iii b iv using an electron gun beam of high energy fast moving electrons in g e in g e or in g in g e in g e in g so no more than electron is knocked out so only one electron is knocked out prevent further ionisation any two processes from accelerate owtte deflect owtte detect owtte allow subscripts for numbers allow capitals ignore knocks out an electron the state symbols need not be present for the electron but if they are they must be g no need to show charge on electron if i ce ignore any equations using m allow stop and other ions being formed not to get wrong m z max ignore wrong causes of process mark scheme general certificate of education a level chemistry unit foundation chemistry january c i c ii d average mean mass of atom s of an element mass of one atom of c or average mass of one mole of atoms mass of one mole of c or weighted average mass of all the isotopes mass of one atom of c or average mass of an atom isotope compared to c on a scale in which an atom of c has a mass of x y x y ratio or or etc none same no of electrons in the outer shell same electron configuration not average mass of molecule allow the wording average mass of atom of an element compared to mass atom of c or mass atom of c allow if moles of atoms on both lines accept answer in words can have top line x instead of bottom line if atoms moles mixed max allow idea that there are x divisions between and correct answer scores m and m if for in in max ignore electrons determine chemical properties ignore protons m dependent on m being correct mark scheme general certificate of education a level chemistry unit foundation chemistry january e o or ef in h o if no o calculated allow m if in and h divided by the correct ar allow in oh do not allow last mark just for ratio if ino h given with no working then allow marks if i not in lose m

Question 1 2 3 4 5 6

Topics to revise

AQA > Physical chemistry > Atomic structure AS >

3 Relative Atomic and Molecular Mass

AQA > Physical chemistry > Atomic structure AS >

2 Spectrometry

AQA > Physical chemistry > Amount of substance AS >

1 The mole and Avogadro’s constant

AQA > Inorganic chemistry > Periodicity AS >

1 Periodicity

AQA > Physical chemistry > Atomic structure AS >

4 Electronic arrangement

Similar questions

AQA Jun 2016 Paper 1 Q1

AQA Jun 2010 Paper 1 Q8

AQA Jan 2012 Paper 1 Q7

AQA Jan 2010 Paper 1 Q5

AQA Jun 2011 Paper 1 Q1

About us | Need Help? | Feedback

Proudly powered by WordPress | Theme: Sydney by aThemes.