Which methods of salt preparation are suitable for copper(II) chloride?
1- Add copper(II) carbonate to dilute hydrochloric acid.
2- Add copper to dilute hydrochloric acid.
3- Warm copper(II) oxide with dilute hydrochloric acid.
1 )
1, 2 and 3
2 )
1 and 2 only
1 and 3 only
4 )
2 and 3 only
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