Question

which of the following has the lowest concentration of OH^- ions
1) 1M NaOH
2) 1M KOH
3) 1M Na2CO3
4) 1M NaHCO3
Plz answer quickly
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Answer 1

Answer:

Here is your answer

2) 1M koh

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Answer 2

Option (c) - 1 M $Na2CO3$  has  the lowest concentration of $OH^-$ions

Explanation:

• Under standard conditions, the following equilibrium operates.
• $2H2O----H3O+ +OH-$
• Sodium hydroxide Base when dissolved gets dissociated into$OH-$ion and the number of$OH-$ increases then the concentration also increases.It will have the highest concentration of hydroxide ions.

• As the concentration is the number of OH_ ions present per unit volume.
• $IM Na2CO3$ has the lowest concentration of hydroxide ions as it is lacking hydroxide ions in it.