For the generic equilibrium ha(aq) ⇌ h+(aq) + a−(aq), which of these statements is true? for the generic equilibrium , which of these statements is true? if you add the soluble salt ka to a solution of ha that is at equilibrium, the concentration of ha would decrease. if you add the soluble salt ka to a solution of ha that is at equilibrium, the ph would increase. the equilibrium constant for this reaction changes as the ph changes. if you add the soluble salt ka to a solution of ha that is at equilibrium, the concentration of a− would decrease.

The correct statement is if you add the soluble salt KA to a solution of HA that is at equilibrium, the pH would increase.

Explanation:

Common ion effect is defined as the effect which occurs on equilibrium when a common ion (an ion which is already present in the solution) is added to a solution. This effect generally decreases the solubility of a solute.

Equilibrium reaction of HA and KA follows the equation:

According to Le-Chateliers principle, if there is any change in the variables of the reaction, the equilibrium will shift in the direction in order to minimize the effect.

In the equilibrium reactions, ion is getting increased on the product side, so the equilibrium will shift in the direction to minimize this effect, which is in the direction of HA.

Thus, the addition of KA will shift the equilibrium in the left direction.

Equilibrium constant depends on the temperature of the system. It does not have any effect on any change of pH.

pH is defined as the negative logarithm of hydrogen ions present in the solution

As, the equilibrium is shifting in the left direction, that means concentration of ions are getting decreases. This will increase the pH of the solution.

Hence, the correct statement is if you add the soluble salt KA to a solution of HA that is at equilibrium, the pH would increase.

jdjxnbfb

explanation:

jjfnc fdnxnxx

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"