All categories

3 years ago

Which of the following equations is balanced in an acidic solution?

1 answer:

5 0

The answer
the only equation which is balanced in an acidic solution is
D. SO42- + 4H+ + 2e- ------------------ SO2(g) + 2H2O(l)
proof:
it is an acid solution because we can see H+, presence of acid in solution
A. SO42- + 2H2O(l) + 2e- SO2(g) + 4OH-
B. SO42- + 4H+ SO2(g) + 4OH- + 2H2O(l) are basic solution, cause we can observe on these solutions the presence of OH-,
as for SO42- + 2e- --------------------SO2(g) it is not an acid solution

You might be interested in

An aluminum block has a volume of 30.0 cm³ and a mass of 81 grams. What is the density of aluminum?

kupik [55]

Answer:

$Density = 2.7 \ g/cm^3$

Explanation:

The equation for density is:

$Density = \frac{mass}{volume}$

We can plug the given values into the equation:

$Density = \frac{81\ g}{30.0\ cm^2}$

$Density = 2.7 \ g/cm^3$

4 0

2 years ago

5. List four examples of neutralization reactions and four for acid-base reactions. You can revisit last week's lesson #

garik1379 [7]

Answer:

Reacciones de neutralización

Mg(OH)2

NaHCO3

Bicarbonato de sodio

Cloruro de sodio

Reacciones acido base

HCl + NaOH → NaCl + H2O.

H2SO4 + 2 NaOH → Na2SO4 + H2O.

HCl + NH3 → NH4Cl + H2O.

HCN + NaOH → NaCN + H2O.

Explanation:

7 0

3 years ago

Match the term with its description. Match Term Definition Chloroplast A) An organelle that contains chlorophyll and in which ph

Otrada [13]

Chloroplast is an organelle that contains clorophyll
Clorophyll is a green pigment present in all plants
Energy is a capacity to do work that can produce physical changes
Glucose is a type of sugar that is produced during Photosynthesis

3 0

3 years ago

Read 2 more answers

3.65 gram of hcl is dissolved in 180 gram of water. Find the total number of molecules of hydrogen

Morgarella [4.7K]

Answer:

$Molec_{\ H_{tot}}=1.206x10^{25}molec$

Explanation:

Hello.

In this case, taking into account that HCl has one molecule of hydrogen per mole of compound which weights 36.45 g/mol, we compute the number of molecules of hydrogen in hydrochloric acid by considering the given mass and the Avogadro's number:

$molec_{\ H}=3.65gHCl*\frac{1molHCl}{36.45gHCl} *\frac{1molH}{1molHCl}*\frac{6.022x10^{23}molec_\ H}{1molH} =6.03x10^{22}molec$

Now, from the 180 g of water, we see two hydrogen molecules per molecule of water, thus, by also using the Avogadro's number we compute the molecules of hydrogen in water:

$molec_{\ H}=180gH_2O*\frac{1molH_2O}{18gH_2O} *\frac{2molH}{1molH_2O}*\frac{6.022x10^{23}molec_\ H}{1molH} =1.20x10^{25}molec$

Thus, the total number of molecules turns out:

$Molec_{\ H_{tot}}=6.03x10^{22}+1.20x10^{25}\\\\Molec_{\ H_{tot}}=1.206x10^{25}molec$

Regards.

6 0

3 years ago

Ian uses litmus paper to determine whether five unknown solutions are acids or bases. The litmus paper turns red when the pH is

Roman55 [17]

Answer: b

explanation: i had the question on a test and got it right.

3 0

3 years ago