Chemistry, 06.07.2019 08:30 Grayvtrain555

How are the properties and safety concerns of these two chemicals barium sulfate and barium sulfide different? are they similar?

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Answer from: matt4379

Answer

Barium Sulfate $\text{BaSO}_4$ is chemically stable and safe for human consumption.

Barium Sulfide $\text{BaS}$ is toxic and shall be handled with care.

Explanation

Barium ions $\text{Ba}^{2+}$ ions can damage cell membranes and are thus toxic to the human body.

Barium ions in barium sulfate, however, are held tightly in ionic lattice and barely dissolve in water. Barium sulfate thus stay intact and give rise to no harmful $\text{Ba}^{2+}$ ions when orally ingested.

Barium sulfide can dissolve in water at significant quantities to produce barium $\text{Ba}^{2+}$ ions and sulfide $\text{S}^{-2}$ ions. Barium ions are toxic aforementioned whereas sulfide ions can undergo hydrolysis to produce hydrogen sulfide, a weak acid that evolves and behaves as a toxic gas.

$\text{BaS} \; (s)\to\text{Ba}^{2+} \; (aq) + \text{S}^{2} \; (aq)\\\text{S}^{2-}\; (aq) + 2\; \text{H}_2\text{O} \; (l) \rightleftharpoons \text{H}_2\text{S} \; (g) + 2 \; \text{OH}^{-} \; (aq)$

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

It’s b. mass i searched it up

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How are the properties and safety concerns of these two chemicals barium sulfate and barium sulfide...

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