Calculate the pH of 0.50M H2S

Answers

Answer 1

Answer: I got that pH=3.65 using the fact that Ka=[H⁺][A⁻]/[HA] at equilibrium. In the ice table, I stands for initial, C stands for change, and E stands for equilibrium.

I hope this helps. Let me know if anything is unclear.

Related Questions

You are using a calorimeter to calculate the specific heat capacity of a metallic ore. The calorimeter contains 0.50 kilograms of water at room temperature (22 °C). We heat the ore in boiling water and then drop the metal into the calorimeter and wait for the water and metal to reach the same temperature. The mass of the ore is 3.5 kilograms. We find that the water has increased in temperature to 24.3 °C. Recall that the specific heat of water is 4.18 J/g–°C. Calculate the specific heat capacity of the ore.
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How many moles of O2 would be consumed if 13.673 g of V were consumed according to the reaction below?
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Which two physical properties allow a mixture to be separated by chromatography?(1) hardness and boiling point
(2) density and specific heat capacity
(3) malleability and thermal conductivity
(4) solubility and molecular polarity

Answers

Answer:

The correct option is: (4) solubility and molecular polarity

Explanation:

Chromatography is an analytical technique which is used for the separation of various components in a given mixture.

In this process, the mixture to be separated is first dissolved in the mobile phase, which carries it through the stationary phase, thus leading to separation of the various components.

This differential separation is the result of the differential migration which is based upon the solubility and polarity of the individual components of of the given mixture.

solubility and molecular polarity

How many mole of chlorine gas react with 0.100 mol of metal iron?
Fe+Cl2-> FeCl2

Answers

                       2 mol Cl
.100 mol Fe  x ------------- = .05 mol Cl
                        1 mol Fe

Which of the following particles has almost no mass? proton neutron electron

Answers

Answer: Electron has almost no mass.

Explanation:

Mass is defined as the actual matter that is contained in a substance. At an atomic level, it is expressed in atomic mass units.

The given options are the 3 subatomic particles.

Mass of the given subatomic particles are:

Proton = 1.007276u

Neutron = 1.008664u

Electron = 0.0005485u

Mass of neutron is slightly more than the mass of proton.

From the above information, it is visible that electron has a negligible mass.

Hence, the correct answer is electron.

Answer:

Electron has almost no mass.

Explanation:

Which compound has hydrogen bonding between its molecules?(1) CH4 (3) KH
(2) CaH2 (4) NH3

Answers

NH3 has Hydrogen bonding between its molecules.

Yup, NH3 it is. Hydrogen bonding usually occur between hydrogen and another electronegative atom such as oxygen, nitrogen or fluorine.

How many grams of lithium nitrate will be needed to make 250 grams of lithium sulfate

Answers

313.03, since every molecule of lithium nitrate produces 1 lithium, where lithium sulfate consumes double, then you find that the moles of lithium sulfate are 2.27 (mass/molar mass), then multiply that by 2 (for the discrepancy in the molecule consumption/production) and then multiply that by the molar mass of lithium nitrate to find the mass of lithium nitrate needed. Hope that helped.

How are elements and compounds are different

Answers

AN element is composed from atoms with the same number of protons,
A compound contain two or more different elements

Other Questions

The diagram below shows the sequence of events and processes which resulted in the origin of life on Earth.Picture shows a flow chart with a rectangle labeled non-living matter at the top, an oval labeled chemical processes below it, and a rectangle labeled A at the bottom. Which of these events best fits the box labeled A? A.destruction of cells B.appearance of bacteria C.creation of primitive plants D.transformation of atmosphere

What happens when an electron moves to a higher energy level?The atom loses the electron. The atom becomes more stable. The electron gains energy.

Why can't we change the subscripts in balancing chemical equations?

Which element would release the most energy while adding an electron to a neutral atom in the gas phase? The choices are the following: Na. . Al. . Br. . S