The chemical formulae of some acids are listed in the first column of the table below, and in the second column it says whether each acid is strong or weak.Complete the table. List the chemical formula of each species present at concentrations greater than about 10−6 mol/L when about a tenth of a mole of the acid is dissolved in a liter of water.acid strong or weak? species present at 10-6 mol/L or greaterwhen dissolved in waterHNO2 weak HI strong HBrO3 strong H2S weak
Question
The chemical formulae of some acids are listed in the first column of the table below, and in the second column it says whether each acid is strong or weak.Complete the table. List the chemical formula of each species present at concentrations greater than about 10−6 mol/L when about a tenth of a mole of the acid is dissolved in a liter of water.acid strong or weak? species present at 10-6 mol/L or greaterwhen dissolved in waterHNO2 weak HI strong HBrO3 strong H2S weak
Solution
The species present at concentrations greater than about 10^-6 mol/L when about a tenth of a mole of the acid is dissolved in a liter of water would be:
For HNO2 (weak acid): HNO2, H+, NO2- Reason: Weak acids partially ionize in water, so you would have the acid itself (HNO2), the hydrogen ion (H+) and the conjugate base (NO2-).
For HI (strong acid): H+, I- Reason: Strong acids completely ionize in water, so you would have the hydrogen ion (H+) and the iodide ion (I-).
For HBrO3 (strong acid): H+, BrO3- Reason: Strong acids completely ionize in water, so you would have the hydrogen ion (H+) and the bromate ion (BrO3-).
For H2S (weak acid): H2S, H+, HS-, S2- Reason: Weak acids partially ionize in water, so you would have the acid itself (H2S), the hydrogen ion (H+), the bisulfide ion (HS-) and the sulfide ion (S2-).
Similar Questions
Some chemical compounds are listed in the first column of the table below. Each compound is soluble in water.Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. The important chemical species that would be present in this solution are written in the second column of the table. Use the checkboxes to classify each compound.compound important species presentwhen dissolved in water type of compound (check all that apply)ionic molecular strong acid weak acid strong base weak baseHC2H3O2 H3O+,C2H3O−2,HC2H3O2,H2O CH3NH2 CH3NH+3,OH−,CH3NH2,H2O KNO3 K+,NO−3,H2O NaOH Na+,OH−,H2O
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