# Acid-base reactionsWatch

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#1
How am i supposed to draw a graph of volume of base added to acid against ph?

I mean am i supposed to measure the ph every 5cm^3 of base i add? and how would i measure the ph?
0
2 years ago
#2
Do you know what kind of acid/base is being used, and the concentration and volume of each in total? The graph will look different depending on factors such as weak/strong acid and the volume of each.

Have you learnt about calculating pH values? This shouldn't be necessary for drawing these kinds of graphs, but you should be familiar with pH = -log[H+] and the related equations.
0
2 years ago
#3
(Original post by will'o'wisp)
How am i supposed to draw a graph of volume of base added to acid against ph?

I mean am i supposed to measure the ph every 5cm^3 of base i add? and how would i measure the ph?
Are you sure you're not doing an sketch? You can use a pH meter.
0
#4
(Original post by lizardlizard)
Do you know what kind of acid/base is being used, and the concentration and volume of each in total? The graph will look different depending on factors such as weak/strong acid and the volume of each.

Have you learnt about calculating pH values? This shouldn't be necessary for drawing these kinds of graphs, but you should be familiar with pH = -log[H+] and the related equations.
(Original post by Kvothe the Arcane)
Are you sure you're not doing an sketch? You can use a pH meter.
http://filestore.aqa.org.uk/resource...-7405-PHBK.PDF
page 107

this is the practical i'm supposed to be doing roughly

my title is to investigate how pH changes when a weak acid reacts with a strong base and when a strong acid reacts with a weak base
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