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Aleksandr [31]
3 years ago
15

Name the complex cocl2(en)2. the oxidation number of cobalt is +2.

Chemistry
1 answer:
VMariaS [17]3 years ago
7 0
The complex CoCl2(en)2 is named as DICHLOROBIS (ETHYLENE DIAMINE) COBALT(II) CHLORIDE.
Here the oxidation number of Cobalt metal is +3. It is a complex compound with no charge on ethylene diamine as it is neutral. The charge on the whole compound is +1.
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How do you do this problem?
xeze [42]

Answer:

Ag₂CrO₄(s) + H⁺(aq) ⟶ 2Ag⁺(aq) + HCrO₄⁻(aq)

Explanation:

Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + CrO₄²⁻(aq).

Silver chromate is the salt of a strong base (AgOH) and a weak acid (H₂CrO₄).

HCrO₄⁻ is an even weaker acid than H₂CrO₄, so CrO₄²⁻ is a strong base.

Any added H⁺ will immediately combine with the chromate ions according to the reaction

H⁺ + CrO₄²⁻ ⟶ HCrO₄⁻

thereby removing chromate ions from solution.

According to Le Châtelier's Principle, more silver chromate will dissolve to replace the chromate ions that the H⁺  removes.

The overall equation for the reaction is

Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + <em>CrO₄²⁻(aq) </em>

<u>H⁺(aq) + </u><em><u>CrO₄²⁻(aq)</u></em><u> ⟶ HCrO₄⁻(aq) </u>

Ag₂CrO₄(s) + H⁺(aq) ⟶ 2Ag⁺(aq) + HCrO₄⁻(aq)

3 0
4 years ago
Given that 0.40 mols of NaCl was dissolved in water to create a
Marina86 [1]
2.86 is the rong answer
4 0
2 years ago
Nitric oxide gas reacts with hydrogen gas to form ammonia gas and water vapor.
AlexFokin [52]
What is your question?
5 0
4 years ago
State the observation made when hydrogen chloride gas is passed over ammonia gas
Zarrin [17]

Answer:

dry

Explanation:

it will dry the hydrogen chloride to the ammonia

6 0
3 years ago
Which of the following salts is the least soluble in water?
Anettt [7]
A. Strontium Phosphate 

Solubility product constant is an equilibrium constant for the maximum amount of solute that can dissolve to form an aqueous solution. The value of the constant describes a solution which is saturated. 

The greater the solubility product constant, the more soluble a solute is in the liquid. Consequently, the smaller the constant, the less soluble the solute is. The following list shows the solubility product constants of the given compounds in aqueous solutions at 298K in decreasing order:

Thallium Bromide - 3.71×10–6
Copper Iodide - 1.27×10<span>–12
</span>Silver Bromide - 5.35×10–13
Silver Arsenate - 1.03×10–22
Mercury Bromide - 6.40×10–23
Strontium Phosphate - 1×10–31
<span>
The salt with the smallest solubility product constant is strontium phosphate, and therefore is the one which is least soluble in water. 

</span>
7 0
4 years ago
Read 2 more answers
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