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almond37 [142]
3 years ago
10

How can you tell a Cu(No3)2 solution from a Ni(NO3)2 solution?

Chemistry
1 answer:
kupik [55]3 years ago
3 0

Answer: Cu(NO_3)_2 solution has blue color and Ni(NO_3)_2 solution has bright green color.

Explanation:

Cu(NO_3)_2(aq)\rightarrow Cu^{2+}(aq)(blue)+ NO_{3}^{1-}(aq)

Cu(NO_3)2 in its aqueous solution gives blue color solution. Copper being transition metal and gives characteristic color in their in aqueous solution.

Ni(NO_3)_2(aq)\rightarrow Ni^{2+}(aq)(green)+ NO_{3}^{1-}(aq)

Ni(NO_3)2 in its aqueous solution gives bright green color solution. Nickel is also a transition metal and gives characteristic color in their in aqueous solution.

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What is the volume of 88 grams of CO2 gas at STP?
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The oxidation state of phosphorus is +3 in
IgorC [24]

Answer:

b) Phosphorus acid

Explanation:

To distinguish the type of acid of phosphorus with the oxidation state of +3, we need to be familiar with the chemical formula of each of the compounds:

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    Phosphorus acid                       H₃PO₃

    Metaphosphoric acid               HPO₃

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Now that we know the formula of the given compounds, the algebraic sum of all the oxidation numbers of all atoms in a neutral compound is zero:

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  H₃PO₃:

   we know the oxidation state of H = +1

                                                          O = -2

         The oxidation state of P is unknown. We can express this as an equation:

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