Copper (II) sulfate exothermically dissolves in water to give the aquo complex [Cu(H 2 O) 6 ] 2+ , which has octahedral molecular geometry and is paramagnetic. Other names for copper(II) sulfate are blue vitriol and bluestone.hen water is then added to the anhydrous compound, it turns back into the pentahydrate form, regaining its blue color, and is known as blue vitriol. Copper(II) sulfate pentahydrate can easily be produced by crystallization from solution as copper(II) sulfate is quite hygroscopic.
The harmonica is a small, versatile instrument played in nearly every kind of music and most cultures the world over. Though it may seem confusing to learn at first glance, the harmonica is actually an easy and fun instrument to get started playing. Read the steps below to learn how to play a harmonica.
The diatonic harmonica is made to play in one key and is easier to learn but you will need to buy more than one. The guitar's natural key is E; so buying a diatonic harmonica in the key of E major would be ideal. The other diatonic harmonicas you should aim to add to your collection is G major and C major. Diatonic harmonicas are cheap and it shouldn't take long before you have a collection of harmonicas that cover every key.