Question 51 of 83 in Acids, Alkalis and Titrations

Other alkaline solutions

2 marks · Normal

State the formula of the ion present in all alkaline solutions and give its charge.

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OH^-, with a single negative charge

Must show: OH^-, negative charge

Also accept: hydroxide, -1; OH^-, -1

Common mistakes: H^+ (confusing acidity and alkalinity); O^2-

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Marking points

B1 · 1 mark · States formula: OH^-

B1 · 1 mark · Gives charge: negative (accept -1 or single negative charge)

Worked solution

The formula is OH^-, and the charge is negative (−1).

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