AQA > AQA Question Papers > A-level CHEMISTRY Paper 2 Organic and Physical Chemistry JUNE 2022 (All)

A-level CHEMISTRY Paper 2 Organic and Physical Chemistry JUNE 2022

Document Content and Description Below

A-level CHEMISTRY Paper 2 Organic and Physical Chemistry JUNE 2022 Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (en... closed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • All working must be shown. • Do all rough work in this book. Cross through any work you do not want to be marked. Information • The marks for questions are shown in brackets. • The maximum mark for this paper is 105. Answer all questions in the spaces provided. box An acidified solution of butanone reacts with iodine as shown. CH3CH2COCH3 + I2 → CH3CH2COCH2I + HI 0 1 . 1 Draw the displayed formula for CH3CH2COCH2I Give the name of CH3CH2COCH2I [2 marks] Displayed formula Name . The rate equation for the reaction is rate = k[CH3CH2COCH3][H+] Table 1 shows the initial concentrations used in an experiment. Table 1 box CH3CH2COCH3 I2 H+ Initial concentration / mol dm−3 4.35 0.00500 0.825 The initial rate of reaction in this experiment is 1.45 ×10−4 mol dm−3 s−1 Calculate the value of the rate constant, k, for the reaction and give its units. [3 marks] k Units . Calculate the initial rate of reaction when all of the initial concentrations are halved. [1 mark] Initial rate of reaction mol dm−3 s−1 Question 1 continues on the next page Turn over ► . An experiment was done to measure the time, t, taken for a solution of iodine to react completely when added to an excess of an acidified solution of butanone. box Suggest an observation used to judge when all the iodine had reacted. [1 mark] The experiment was repeated at different temperatures. Figure 1 shows how 1 varied with temperature for these experiments. t Figure 1 [Show More]

Last updated: 1 year ago

Preview 1 out of 25 pages

Add to cart

Instant download

document-preview

Buy this document to get the full access instantly

Instant Download Access after purchase

Add to cart

Instant download

Reviews( 0 )

$17.00

Add to cart

Instant download

Can't find what you want? Try our AI powered Search

OR

REQUEST DOCUMENT
56
0

Document information


Connected school, study & course


About the document


Uploaded On

May 17, 2023

Number of pages

25

Written in

Seller


seller-icon
examstore001

Member since 1 year

1 Documents Sold


Additional information

This document has been written for:

Uploaded

May 17, 2023

Downloads

 0

Views

 56

Document Keyword Tags


$17.00
What is Browsegrades

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 FAQ
 Questions? Leave a message!

Follow us on
 Twitter

Copyright © Browsegrades · High quality services·