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Examine other groups and periods in the periodic table to see if the same trends exist. What trends do you see in ionization energy down a group and across a period?
Yes, the same trend exists in other groups. For instance, if we look at groups starting with 8 and greater, we notice that all elements there have valence that is...
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Use activities to calculate the electrode potential of a hydrogen electrode in which the electrolyte is 0.0100 M HCl and the activity of H2 is 1.00 atm.
Ecell= K + 0.05916/0.0100 log (H+)Concentration of HCl = 0.0100 MActivity coefficient of H+ = 0.913Pressure of H2 = 1.00 atmEcell = 0.913 + (0.05916/0.0100) log (H+) 11.2= 0.93 +...
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why in PH titration we do not use referance electrode ?it just PH electrode as indecator electrode please explain that .
Most often used pH electrodes are glass electrodes.Typical model is made of glass tube ended with small glass bubble. Inside ofthe electrode is usually filled with buffered solution of chlorides...
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List all the metals of the first series of transition metals in order of increasing atomic number
The first series of transition metals include;21Sc, 22Ti, 23V, 24Cr, 25Mn, 26Fe, 27Co, 28Ni, 29Cu, 30Zn.
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List all the metals of the first series of transition metals in order of increasing atomic number How does the atomic radius of the elements vary across the series ? Explain
(a) List of the first series of transition metals in increasing atomic number;Sc - 21Ti-22V-23Cr-24Mn-25Fe-26Co -27Ni-28Cu-29Zn -30(b) How atomic radius varies across the series.Atomic radius decreases from Sc to ZnThis...
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What do you mean by electrode potential and how the trends of the electrode potentials vary across the first series of the transition metals
STANDARD POTENTIAL (normal potential), the value of the electrode potential measured under standard conditions relative to the selected reference electrode (standard electrode). The electronic potential in a number of...
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Discuss the trend for the atomic radii across the first series of the transition metals
Atomic radii of the first transition series decrease from Sc to Cr, then remains almost constant till Ni and then increases from Cu to Zn. The reason of this variation...
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Electrode potential of Standard hydrogen electrode is 0. Still is used as a primary referance electrode. justify.
It's the same reason why 0 on the Celsius scale coincides with the melting point of water - we need a common baseline against which we can compare the temperature...
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Calculate ∆G° for the reaction occurring in the following cell :
Al (s) | Al³⁺ 1(M) || Cu²⁺ 1(M) Cu (s)
Standard electrode potentials :
E°= −1.66 V and E°= + 0.34 V
Al³⁺/Al Cu²⁺/Cu
E°=0.34-(-1.66)=2 V∆G°=-nFE°/1000=-6*96485*2=-1157 kJ/mol
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What are alkali metals? Why do these metals not occur in free state in nature? List the principal ores of alkali metals.
Alkali metals are: - Lithium (Li); - Sodium (Na); - Potassium (K); - Rubidium (Rb); - Cesium (Cs); - Francium (Fr). All alkali metals have their outmost electron in the s-orbital. This pre-determines their high chemical...
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