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velikii [3]
3 years ago
12

Give the spectator ions for the reaction that occurs when aqueous solutions of H 2SO 4 and KOH are mixed.

Chemistry
1 answer:
Sever21 [200]3 years ago
5 0

Answer:

The spectator ions is: K^+   and  SO^{2-}_4

Explanation:

The equation of reaction between  H₂ SO₄ and KOH is:

H_2SO_{4(aq)} + 2KOH _{aq} \to K_2SO_{4(aq)} +2H_2O _{(l)}

Rewriting this equation as ionic;

[2H^{+} + SO^{2-}_4 + 2K^+ +2OH^- \to 2K^+  SO_4^{2-} + 2H_2O ]

Spectators ions are ions present on both sides of the ionic equation by the same quantity but do not take part in the net reaction.

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A solution of HCOOH has 0.16M HCOOH at equilibrium. The Ka for HCOOH is 1.8×10−4. What is the pH of this solution at equilibrium
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pH=2.28

Explanation:

Hello,

In this case, for the acid dissociation of formic acid (HCOOH) we have:

HCOOH(aq)\rightarrow H^+(aq)+HCOO^-(aq)

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Ka=\frac{[H^+][HCOO^-]}{[HCOOH]}

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