Question

Which of the compounds of h2c2o4, ca(oh)2, koh, and hi, behave as acids when they are dissolved in water?

Answer 1

H2C2O4 and HI behave as acid since they contain H+ ion whereas Ca(OH)2 and KOH containOH- ions and hence act as bases in water

Hope it helps.

Answer 2

When dissolved in water, compounds such as $H_2C_2O_4$ and HI acts as acids.

Explanation:

• The substance can act as acid, when it produces $H^+$ or $H_3O^+$ ions.
• The reaction occurring during dissolution of given substances in water is as follows

1. $H_2C_2O_4$ + $H_2O$⇄$H^+ + HC_2O_4^-$
2. $Ca(OH)_2+H_2O$⇄$Ca^{2+} + 2OH^-$
3. $KOH + H_2O$⇄$K^++OH^-$
4. $HI + H_2O$⇄$H_3O^+ + I^-$

• From the above equation, it is observed that compound such as $H_2C_2O_4$ and $HI$, produces $H^+$ and $H_3O^+$ ions.
• Thus these compounds behave as acid when they are dissolved in water.

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