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Write a half-reaction for the oxidation of the manganese in MnCO3(s) to MnO2(s) in neutral groundwater where the carbonate-conta

Sergeu [11.5K]

Answer:

The half-reaction for the oxidation of the manganese in $MnCO_3(s)$ to $MnO_2(s)$ .:

$MnCO_3+2H_2O\rightarrow MnO_2(s)+HCO_3^{-}+3H^+$

Explanation:

$MnCO_3+H_2O\rightarrow MnO_2(s)+HCO_3^{-}$

Let us say the medium in which reaction is taking place is an acidic medium. And balancing in an acidic mediums done as;

Step 1: Balance all the atom beside oxygen and hydrogen atom;

$MnCO_3+H_2O\rightarrow MnO_2(s)+HCO_3^{-}$

Manganese and carbon are balanced.

Step 2: Balance oxygen atom adding water on the required side:

$MnCO_3+H_2O+H_2O\rightarrow MnO_2(s)+HCO_3^{-}$

$MnCO_3+2H_2O\rightarrow MnO_2(s)+HCO_3^{-}$

Step 3: Now balance hydrogen atom by adding hydrogen ion on the required side:

$MnCO_3+2H_2O\rightarrow MnO_2(s)+HCO_3^{-}+3H^+$

6 0

3 years ago

A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o

ruslelena [56]

Answer:

102.807 kPa

Explanation:

There are some assumptions to be made in the answer. The air inside the balloon acts as an ideal gas at a given temperature conditions.

Using the combined ideal gas equation.

$PV = nRT\\$

P= absolute pressure of air inside the balloon.

V= volume of air inside the balloon (6.23 L= 6.23 * 10⁻³ m³)

n= moles of gas(air). (0.250 mol)

R= Universal gas constant ( 8.314 J / mol·K)

T= Temperature in Kelvin

T= 35 + 273.15 = 308.15 K

So, $P = \frac{nRT}{V}$

$P = \frac{0.250 * 8.314 * 308.15}{6.23 * 10^{-3} }$

P= 102.807 * 10³ Pa

P= 102.807 kPa

3 0

3 years ago

Read 2 more answers

How do the structures of particles in substances vary?

lesya692 [45]

Answer:

56

Explanation:

8 0

3 years ago

Acid rain is: dust, soot, and other finely divided solid and liquid particles. a condition associated with smog that causes eye

anastassius [24]

Answer:

The correct option is: the precipitation of acidic compounds formed when components of air pollution interact with other components in the air.

Explanation:

Acid rain is a form of precipitation which is usually acidic in nature. The acidic nature of rain is due to the reaction of water molecules with sulfur dioxide, carbon dioxide and nitrogen oxide present in the air, to produce acids.

There are many adverse effects of acid rain, some of them are: effect on water bodies, forests, living organisms, corrosion of structures made of steel and weathering of buildings.

4 0

3 years ago

What is the sum of 334.540 g and 198.9916 g to the correct significant figure?

slavikrds [6]

The answer to the question is a

5 0

3 years ago