Answer:
Cu+(aq)--->Cu2+(aq) + e- : oxidation
reason: there is loss of electrons.
I2(s) + 2e--->2I-(aq) : reduction
reason: There is reduction of electrons.
These rocks were either roasted or exposed to severe weathering
Answer:
1) Add more sulfate ions.
2) 1 M K₂SO₄.
Explanation:
<em>1) Which of the following actions would shift this reaction toward solid barium sulfate?</em>
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- Le Châtelier's principle states that if a stress is applied to a system at equilibrium, the system will shift to relieve that stress and attain the equilibrium again.
Add more sulfate ions will increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.
<em>So, the right choice is: Add more sulfate ions.</em>
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<em>2) In which of the following would barium sulfate be least soluble? </em>
The answer is 1 M K₂SO₄, it has a common ion effect of SO₄⁻ ions that increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.
<em>So, the solubility will decrease.</em>
The students with ionic bonds have a better understanding of what the model needs to illustrate.
Explanation:
- When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called dissociation.
- When placed in water, the ions are attracted to the water molecules, each of which carries a polar charge.
- If the force between the ions and the water molecules is strong enough to break the bonds between the ions, the compound dissolves.
- The ions dissociate and disperse in solution, each ringed by water molecules to prevent reattachment.
- The ionic solution turns into an electrolyte, meaning it can conduct electricity.
- While covalent compounds dissolve in water they break apart into molecules, but not individual atoms.
- Water is a polar solvent, but covalent compounds are usually nonpolar.
- This means covalent compounds typically don't dissolve in water, instead making a separate layer on the water's surface.
I think it's electric discharge
