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Tresset [83]
3 years ago
6

What is the oh−concentration and ph in each solution? (a) 0.225 m koh, (b) 0.0015 m sr(oh)2?

Chemistry
1 answer:
shepuryov [24]3 years ago
7 0
Q1)
We have been given the OH⁻ concentration, therefore we first need to find the pOH value and then the pH value.
pOH = -log [OH⁻]
pOH = -log (0.225 M)
pOH =  0.65
pH + pOH = 14
pH = 14 - 0.65 = 13.35

Q2)
pOH = -log[OH⁻]
pOH = -log (0.0015 M)
pOH = 2.82
pH + pOH = 14
pH = 14 - 2.82 
pH = 11.18

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when the following redoc reaction is balances (assume acidic solution), how many moles of water appear and on what side
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8 moles of water on the right side.

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Redox reactions: the burning of fuels, the corrosion of metals, and even the processes of photosynthesis and cellular respiration involve oxidation and reduction.

Step 1:

MnO4- ----> Mn2+

2Cl- ------> Cl2

Step 2:

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Step 3:

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Step 4:

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Step 5:

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The answer is; C

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An expanding balloon with the increased evolution of gas is a good visible practical sign in the experiment on the conservation of matter in the reaction. As the magnesium disappears with an increased input of hydrochloric acid, the balloon gets bigger showing that more hydrogen is evolved from the reaction;

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4 0
3 years ago
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According to
NemiM [27]

Answer:

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Explanation:

- This law states volume and pressure have an inverse relationship when temperature is constant.

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What is the object called that burns as it enters the atmosphere and causes an shooting star?
nataly862011 [7]

Answer:

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Explanation:

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