Remark
The balance numbers in front of Ag and AgNO3 are both 2. That number is in moles.
Rule: if the moles are the same in the equation, then whatever you are given for one, will be the same for the other. So you have 0.854 moles of Ag. You will also have 0.854 moles of AgNO3
Answer: 0.854 <<<<<
Answer:
Diffusion means that particles travel from a higher concentration to a lower concentration region before balance is achieved. The semi-permeable membrane is present in osmosis, so that only solvent molecules can travel freely to equalize the levels.
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Answer:
Indeed, most ionic compounds contain polyatomic ions. Well-known examples are sodium hydroxide (NaOH) with OH- as the polyatomic anion, calcium carbonate (CaCO3), and ammonium nitrate (NH4NO3), which contains two polyatomic ions: NH+ and NO3-.
Explanation:
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Calculate the concentration of all species in a 0.12 M KF solution Ka(HF)=6.3×10⁻⁴ is 0.00002723
The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution
Here given data is first write the balanced equilibrium equation
HF ↔ H⁺ + F⁻
Therefore the mole ratio is: 1 HF: 1 H⁺ : 1 F⁻
Hence Ka = [H⁺] [H⁺] / [HF] = [H⁺]² / [HF]
From the KF value you can calculate the H⁺
H⁺ = 10⁻⁰.¹² = 1.31
Now substitute this value in the Ka in the equation of ka
Ka = [H⁺]² / [HF] ⇒ [HF] = [H⁺]² / Ka = (1.31)²/6.3×10⁻⁴ = 0.00002723
There fore the concentration of all species is 0.00002723
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