The diagram shows a portion of the standard electrochemical series at 298 K for four metals, W,X,Y, W, X, Y,\,W,X,Y, and ZZZ.
A student wants to identify which metal will react spontaneously with dilute hydrochloric acid (1 mol dm-3) to produce hydrogen gas, but is thermodynamically unable to react with cold water under standard conditions.
Which metal fits these criteria?
Metal WWW
Metal YYY
Metal XXX
Metal ZZZ
Obtaining and using metals Questions
Practise Edexcel GCSE Chemistry Obtaining and using metals with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.