1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
denis23 [38]
3 years ago
13

For the diprotic weak acid h2a, ka1 = 3.2 × 10-6 and ka2 = 6.1 × 10-9. what is the ph of a 0.0650 m solution of h2a? what are th

e equilibrium concentrations of h2a and a2– in this solution?
Chemistry
1 answer:
Stolb23 [73]3 years ago
5 0
Given:

Diprotic weak acid H2A:
 
Ka1 = 3.2 x 10^-6
Ka2 = 6.1 x 10^-9. 
Concentration = 0.0650 m 

Balanced chemical equation:

H2A ===> 2H+  + A2- 
0.0650       0        0
-x                2x       x
------------------------------
0.065 - x     2x      x

ka1 = 3.2 x 10^-6 = [2x]^2 * [x] / (0.065 - x)

solve for x and determine the concentration at equilibrium. 


You might be interested in
Is one mole of zinc the same as one atom of zinc?
Papessa [141]

Answer: No.

Explanation: One mole of zinc is not the same as one atom of zinc. In one mole of zinc, there are approximately 6.022*10^23 atoms of zinc.

3 0
3 years ago
What period is the atom in?
lys-0071 [83]
It is in period 3
It is in group 17
It is a chlorine atom because it has 17 electrons which means the atomic number is 17
6 0
3 years ago
The Earth's mantle is
EleoNora [17]

Answer:

C. cooler than both the crust and the core

Explanation:

It is observed that at the mantle, temperatures range from estimatedly 200 °C (392 °F) around the upper boundary with the crust to approximately 4,000 °C (7,230 °F) at the core-mantle boundary.

So we can say the mantle is cooler than both the crust and the core.

5 0
3 years ago
A type of potential energy that is associated with objects that can be stretched or compressed is called ??
Scorpion4ik [409]
The answer is C. Elastic potential energy
4 0
3 years ago
Given the equation for a system at equilibrium:
zlopas [31]

Answer: 1. NH_3 increases.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

For the given equation:

N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)+energy

If the concentration of N_2 is increased , according to the Le-Chatlier's principle, the reaction has to shift to right or forward direction. In order to do that  the concentration of products has to increase.

Thus the concentration of NH_3 increases.

6 0
3 years ago
Other questions:
  • the heat of fusion of acetone is 5.7 kJ/mol. Calculate to two significant figures the entropy change when 6.3 mol of acetone mel
    7·1 answer
  • Adding hydrogen atoms to an unsaturated fatty acid will make it __________.
    9·2 answers
  • Why does Tom Zambrano think that renewable energy science is a good choice for a career?
    9·2 answers
  • Household items that are substance or mixture
    6·2 answers
  • The energy we get from the sun is called THERMAL ENERGY and the energy from the Earth is called SOLAR RADIATION.
    15·1 answer
  • BRAINLIESTTT !!! Pls help ASAP !!!! How does plasma state of matter interact with other matter?
    12·1 answer
  • Does seeing a gas produced always mean a chemical reaction is occurring? Explain.
    8·2 answers
  • How much does Suitcase weight if it has a mass of 22.5kg
    13·1 answer
  • A catalyst increases the rate of a chemical reaction by
    5·1 answer
  • M + e- ---> M-1 Is M an oxidizing or reducing agent?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!