the-complete-reaction-of-molybdenum-metal-with-10-m-h2so4-in-the-absence-of-air-

Question

The complete reaction of molybdenum metal with 1.0 M $$H_{2}SO$$_{4} in the absence of air produced a blue solution and a colorless gas. Upon the addition of excess KNO_{2}, the solution changed color and its paramagnetism decreased. What is the reason for this observation?

Accepted Answer

This observation is due to the conversion of [Mo($$H_{2}O$$)_{6}]^{2+} from a high spin complex with four unpaired electrons to a low spin complex with two unpaired electrons by the addition of excess KNO_{2}.

Answer

This observation is due to the conversion of [Mo($$H_{2}O$$)_{6}]^{2+} from a low spin complex with two unpaired electrons to a high spin complex with four unpaired electrons by the addition of excess KNO_{2}.

Answer

This observation is due to the conversion of [Mo($$H_{2}O$$)_{6}]^{2+} from a high spin complex with two unpaired electrons to a low spin complex with four unpaired electrons by the addition of excess KNO_{2}.

Answer

This observation is due to the conversion of [Mo($$H_{2}O$$)_{6}]^{2+} from a low spin complex with four unpaired electrons to a high spin complex with two unpaired electrons by the addition of excess KNO_{2}.

The complete reaction of molybdenum metal with 1.0 M H2SO4 in the absence of air produced a blue solution and a colorless gas. Upon the addition of excess KNO2, the solution changed color and its paramagnetism decreased. What is the reason for this observation?

The complete reaction of molybdenum metal with 1.0 M H₂SO₄ in the absence of air produced a blue solution and a colorless gas. Upon the addition of excess KNO₂, the solution changed color and its paramagnetism decreased. What is the reason for this observation?