Formic acid (hco2h) has a dissociation constant of 1.8 _ 104 m. the acid dissociates 1: 1. what is the [h+] if 0.1 mole of formic acid is dissolved in 1.0 liter of water? use a scientific calculator.

0.9 _ 10^-3 m

4.2 _ 10^-3 m

7.9 _ 10^-3 m

15 _ 10^-4 m

M

Explanation: The equilibrium reaction for dissociation of weak acid is,

initially conc.       c                          0         0

At eqm.              

The expression for dissociation constant is:

when is very very small the, the expression will be,

Now put all the given values in this expression, we get

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation:

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