E) Acids, alkalis and titrations

colour of litmus in acidic solution (H⁺)

colour of litmus in acidic solution (H⁺)

red

colour of litmus in alkaline solution (OH^-)

blue

colour of methyl orange in acidic solution (H⁺)

red

colour of methyl orange in alkaline solution (OH^-)

yellow

colour of phenolphthalein in acidic solution (H⁺)

colourless

colour of phenolphthalein in alkaline solution (OH^-)

pink

pH 0-3

strongly acidic

pH 4-6

weakly acidic

pH 7

neutral

pH 8-10

weakly alkaline

pH 11-14

strongly alkaline

describe the use of universal indicator to measure the approximate pH value of an aqueous solution

acids in aqueous solution are a source of ________ ions

hydrogen

alkalis in a aqueous solution are a source of __________ ions

hydroxide

can alkalis neutralise acids

YES!