posted by .

The ionization constant of HA is 4.0e-4. Using the ice table what is the equilibrium concentration of HA in terms of its initial concentration and x?

HA(aq) + H2O(l) = H3O^+^(aq) + A^-^(aq)

I 0.040M OM OM
C -X +x +x
E ? x x

I thought that to find the concentration you need to do 0.040-x=4.0e-4 but I am not sure if this is correct.

• Chemistry(Please respond, thank you) -

It is 0.04-x.

• Chemistry(Please respond, thank you) -

oh ok I see, thank you.

## Similar Questions

1. ### chemistry

Please judge my answer, thank you Question: What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10?
2. ### Chem

Methylaime, CH3NH2. If a 0.100 mol/L solution of methyamine has a pH of 11.80, calculate the ionization constant for the weak base. What is an ionization constant. Is it just K?
3. ### chemistry (acid-ionization constant)

A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ion concentration of 6.36 ´ 10–4 M. Calculate the acid-ionization constant of carbonic acid. The equilibrium equation is: H2CO3(aq) + H2O(l) <--><--> …
4. ### Chemistry(Please check, thank you!)

I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 …

I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 …

I completed a lab to find the determination of Kc. I have to find the concentrations of reactants at equilibrium using an ICE table. The equation that were are using is Fe^3+(aq) + SCN^-(aq) -> Fe(SCN)^2+(aq) I have to create 5 …
7. ### chemistry

Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (OJ = 31.6x10^-6 and milk = 3.16x10^-8), complete the reaction table for vinegar. Then calculate the acidity constant. Please show all work in solving …
8. ### Chemistry

At 2000 ∘C the equilibrium constant for the reaction 2NO(g)←−→N2(g)+O2(g) is Kc=2.4×103. The initial concentration of NO is 0.220M . What is the equilibrium concentration of NO?
9. ### Chemistry

Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (3.2x10-3), complete the reaction table for vinegar. Then calculate the acidity constant. Reaction table is given Ch3COOH + H2O --CH3COO- + H3O+ …
10. ### Chemistry

For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. I wrote: [N2O][H2O] / [NO]2 [H2] This reaction takes place at 25°C. At this temperature the concentration …

More Similar Questions