Explain the chemistry behind chromyl chloride test.
transition elements form alloys
Cr2+ is a stronger reducing agent than Fe2+ .why?
plz ans in short
Describe preparation of KMnO4 from pyrolusite.
What is the effect of increasing pH on a solution of potassium dichromate????
plz help me in dis!!
Why is oxygen a gas and Sulphur a solid ?
why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding?
What is meant by disproportionation? Give one example of disproportionation reaction in aqueous solution.
cu2+ is coloured but cu+ is not and sc2+ is colured but sc3+ is not why????
Explain giving reasons:
(i) Transition metals and many of their compounds show paramagnetic
behaviour.
(ii) The enthalpies of atomisation of the transition metals are high.
(iii) The transition metals generally form coloured compounds.
(iv) Transition metals and their many compounds act as good catalyst.
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions (ii) SO2 and (iii) oxalic acid?
Write the ionic equations for the reactions.
1. In the first transition series only copper has positive electrode potential. Why?
PLEASE ANSWER AS EARLY AS POSSIBLE!!!!!!!!!!
Zn, Cd, and Hg are not regarded as transition elements and why Uub is regarded as transition elements
Ce3+ is easily oxidised to Ce4+. WHY?
Explain the chemistry behind chromyl chloride test.
transition elements form alloys
Cr2+ is a stronger reducing agent than Fe2+ .why?
plz ans in short
Describe preparation of KMnO4 from pyrolusite.
What is the effect of increasing pH on a solution of potassium dichromate????
plz help me in dis!!
Why is oxygen a gas and Sulphur a solid ?
why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding?
What is meant by disproportionation? Give one example of disproportionation reaction in aqueous solution.
cu2+ is coloured but cu+ is not and sc2+ is colured but sc3+ is not why????
Explain giving reasons:
(i) Transition metals and many of their compounds show paramagnetic
behaviour.
(ii) The enthalpies of atomisation of the transition metals are high.
(iii) The transition metals generally form coloured compounds.
(iv) Transition metals and their many compounds act as good catalyst.
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions (ii) SO2 and (iii) oxalic acid?
Write the ionic equations for the reactions.
1. In the first transition series only copper has positive electrode potential. Why?
PLEASE ANSWER AS EARLY AS POSSIBLE!!!!!!!!!!
Zn, Cd, and Hg are not regarded as transition elements and why Uub is regarded as transition elements
Ce3+ is easily oxidised to Ce4+. WHY?