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2 years ago

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How many grams of NaoH are needed to nutralize 50 grams of H2SO4?

1 answer:

sergij07 [2.7K]2 years ago

6 0

to neutralize 1 mole of H2 S o4 we need one mole of any if we are having 50 grams of H2 S o4 it means the mole of H2 S o4 in 50 gram will be 50×40)/98 hence

utilising 50 grams of H2 S o4 we need approximately 20. 5 gm of Naoh

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Which of these half-reactions represents reduction?

gogolik [260]

Answer: The half-reactions represents reduction are as follows.

$Cr_{2}O^{2-}_{7} \rightarrow Cr^{3+}$
$MnO^{-}_{4} \rightarrow Mn^{2+}$

Explanation:

A half-reaction where addition of electrons take place or a reaction where decrease in oxidation state of an element takes place is called reduction-half reaction.

For example, the oxidation state of Cr in $Cr_{2}O^{2-}_{7}$ is +6 which is getting converted into +3, that is, decrease in oxidation state is taking place as follows.

$Cr_{2}O^{2-}_{7} + 3 e^{-} \rightarrow Cr^{3+}$

Similarly, oxidation state of Mn in $MnO^{-}_{4}$ is +7 which is getting converted into +2, that is, decrease in oxidation state is taking place as follows.

$MnO^{2-}_{4} + 5 e^{-} \rightarrow Mn^{2+}$

Thus, we can conclude that half-reactions represents reduction are as follows.

$Cr_{2}O^{2-}_{7} \rightarrow Cr^{3+}$
$MnO^{-}_{4} \rightarrow Mn^{2+}$

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2 years ago

Please complete the sentence. You can separate the parts of any mixture by using _____________ processes.

elena55 [62]

I believe the answer is filtration.

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3 years ago

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Perform the following conversions:<br> (a) 68°F (a pleasant spring day) to °C and K.

IgorC [24]

Converting temperature of 68°F to °C gives 20 °C.

Converting temperature of 68°F to K gives 293 K.

<h3>What is temperature conversion?</h3>

Temperature conversion is the process of converting the measurement units of the temperature recorded in a particular unit to another unit.

The various units of Temperature include;

degree Celsius
degree Fahrenheit
degree Kelvin

Temperature is measured with thermometer and it records the hotness or coldness of a body.

<h3>Converting 68°F to °C</h3>

F = 1.8C + 32

(F - 32/1.8) = C

(68 - 32) / 1.8 = C

20 ⁰C = 68 ⁰F

<h3>Converting 20°C to K</h3>

0 °C = 273 K

20 °C = 273 + 20 = 293 K

Learn more about temperature conversion here: brainly.com/question/23419049

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1 year ago

Which of the following diagrams correctly shows the reaction pathway of a reaction that releases energy ?

zavuch27 [327]

The answer is diagram A.

Hope this helped. Good luck!

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3 years ago

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Anettt [7]

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2 years ago