Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    Hi, I'm stuck on June 2013 R Question 3 C
    It's a multiple choice question so hopefully won't take anyone too long to do!
    Here is a link to the paper
    http://qualifications.pearson.com/co...e_20130612.pdf


    Thank you guys xx


    Name:  chemistrya2.PNG
Views: 48
Size:  44.5 KB

    I've also inserted the question
    • Thread Starter
    Offline

    2
    ReputationRep:
    you are asked to find the ph
    Offline

    2
    ReputationRep:
    (Original post by keres)
    Hi, I'm stuck on June 2013 R Question 3 C
    It's a multiple choice question so hopefully won't take anyone too long to do!
    Here is a link to the paper
    http://qualifications.pearson.com/co...e_20130612.pdf


    Thank you guys xx


    Name:  chemistrya2.PNG
Views: 48
Size:  44.5 KB

    I've also inserted the question
    Attached working
    Attached Images
     
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by marcusman97)
    Attached working

    Thanks so much! xx
    I used the same working as you, but I got 2.23 which I rounded to 2.24 thus making my answer wrong
    How did you choose to round to 2.2?
    because surely you get 2.2365.... and round to 2.24?
    Offline

    2
    ReputationRep:
    No problem! Did you round your answer early after calculating the [H+]? My final answer for pH was 2.234 with no rounding anywhere. Even if you rounded early, you got 2.24, and out of all the multiple choice A is still closest
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: June 7, 2016
Poll
Do you like carrot cake?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.