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NeX [460]
2 years ago
9

What other means of qualitative analysis are used to identify metals

Chemistry
2 answers:
NNADVOKAT [17]2 years ago
5 0

Answer:

Precipitation, visible-evidenced redox reactions and complexation reactions are used to identify metals.

Explanation:

Hello,

In this case, since you are talking about qualitative analysis, several techniques such as precipitation, visible-evidenced redox reactions and complexation reactions are suitable to identify metals. Such reactions are good enough as long as depending on the metals' cation, it precipitate, redox behavior and complexation will produce a particular color that will allow the identification of the metal.

For instance, to determine the presence of silver, a white precipitate is obtained when chloride ions are placed into a silver-containing sample. The presence of cobalt is substantiated via the formation of a yellowish-brown ionic complex of hexamminecobaltae (II).

Best regards.

Masja [62]2 years ago
3 0
<span>Figure out the density. every metal has it's own. just fill a glass up to the top with water, and then carefully put the metal in. measure how much water is displaced (either by collecting the water or by measuring the glass afterwards),
then you will have the substance's density, because you have volume and it's measurement. </span>
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In this chemical Formula for Ammonia, the Subscripts indicate what?
zubka84 [21]

Answer:

B

Explanation:

B. There are two atoms of Nitrogen and two atoms of Hydrogen combined to make Ammonia.

7 0
2 years ago
Calculate the average reaction rate expressed in moles h2 consumed per liter per second
djyliett [7]

Answer:

Average rate of reaction expressed in moles H₂ consumed per liter per second = 0.0025 M/s = 0.0025 mol/L.s

Explanation:

The complete, correct Question, is presented in the attached image to this answer.

The average rate of reaction in terms of the reactant is defined as the total amount of reactant consumed over a period of time divided by total period of time.

Mathematically,

Average rate of reaction = (change in concentration of H₂ over a period of time) ÷ (total period of time)

Average rate of reaction = (-ΔC)/(Δt)

The minus sign is there because the concentration of reactants reduce with time.

change in concentration of H₂ = -ΔC

= -(0.02 - 0.03) = 0.01 M

Time = Δt = 4 - 0 = 4.0 s

Average rate of reaction = (0.01/4) = 0.0025 M/s

We could solve for the average rate of reaction expressed in moles Cl₂ consumed per liter per second

change in concentration of Cl₂ = -ΔC

= -(0.04 - 0.05) = 0.01 M

Time = Δt = 4 - 0 = 4.0 s

Average rate of reaction = (0.01/4) = 0.0025 M/s = 0.0025 mol/L.s

Hope this Helps!!!

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3 years ago
I WILL GIVE BRAINLIEST PLEASE HELP ME I NEED HELP!
AleksAgata [21]
I think the answer would be trenches but I’m sorry if I’m wrong
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Which scenario involves a reaction that is at equilibrium?
musickatia [10]

Answer:

the amount of products and reactants is constant

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What is the name of this alkane?
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