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3 years ago

Which statement is true about an acidic solution?

Chemistry

1 answer:

Sidana [21]3 years ago

5 0

Answer:

It has greater concentration of hydronium ion than hydroxide ions

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386 g ÷ 20cm3 what is density

tatyana61 [14]

22.3 is the answer to this question

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4 years ago

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Most sulfide compounds of the transition metals are insoluble in water. Many of these metal sulfides have striking and character

docker41 [41]

Answer:

$Fe^{2+}(aq)+H_2S(aq)\rightarrow FeS (s)+2H^+ (aq)$

$2Cr^{3+}(aq)+3H_2S(aq)\rightarrow Cr_2S_3 (s)+6H^+ (aq)$

$Ni^{2+}(aq)+H_2S(aq)\rightarrow NiS (s)+2H^+ (aq)$

Explanation:

We're given the following ions:

$Fe^{2+}, Cr^{3+}, Ni^{2+}$

Hydrogen sulfide is a weak acid, so it only ionizes to ions to a very low extent. This means we would expect to see it in a molecular form in a net ionic equation rather than a dissociated form (hydrogen cations and sulfide anions). In each of these net ionic equations, we expect the three cations to displace hydrogen from hydrogen sulfide and form three precipitates.

Firstly, iron(II) displaces hydrogen forming iron(II) sulfide and acidic conditions:

$Fe^{2+}(aq)+H_2S(aq)\rightarrow FeS (s)+2H^+ (aq)$

Secondly, chromium(III) cation displaces hydrogen forming chromium(III) sulfide:

$2Cr^{3+}(aq)+3H_2S(aq)\rightarrow Cr_2S_3 (s)+6H^+ (aq)$

Thirdly, nickel(II) cation displaces hydrogen forming nickel sulfide:

$Ni^{2+}(aq)+H_2S(aq)\rightarrow NiS (s)+2H^+ (aq)$

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3 years ago

HELP PLEASE!! IF YOU DO AND ANSWER CORRECTLY YOU WILL GET A BRAINLIEST 5 STARSSSS AND A THANKS!! PLEASE PLEASE HELPPP

gladu [14]

1.) publish a journal that is verified by other scientists
2.) present at conferences
3.) present at universities
4.) inform popular media’s
5.) show data
6.) show hypothesis
7.) and give a theory

4 0

3 years ago

Need help on this question

o-na [289]

Answer:

It is the 2nd one

5 0

2 years ago

If a particle has Z = 25 and 23 electrons, what is its charge?

Anton [14]

Answer:- The charge is +2.

Explanations:- Z stands for atomic number. The Z is given as 25 means the atomic number of the element is 25. It has 23 electrons. For a neutral atom the number of electrons is same as the atomic number. Since the number of electrons is less than atomic number, the atom must have lost the electrons.

Number of electrons lost = 25 - 23 = 2

If the element lost electrons then it has positive charge. As, the electrons are lost, the charge is +2.

3 0

3 years ago

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