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sesenic [268]
3 years ago
5

Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. C(s) + H2(g) --> C2

H6(g)?
Chemistry
2 answers:
Olin [163]3 years ago
8 0

Answer: 2C(s) + 3H2(g) = C2H6(g)

Explanation:

In balancing chemical equations, the reactant must be equal to the product. I.e law of conservation of matter must hold.

2 moles of carbon would react with 3 moles of hydrogen to give 1 mole of methane

2C(s) + 3H2(g) = C2H6(g)

Mumz [18]3 years ago
3 0

Answer:

<u>2</u>C(s) + <u>3</u>H2(g) --> C2H6(g)

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Answer:

This solution acts as an efficient buffer

Explanation:

the pH of a buffer solution can be described like this: pH=pKa+log\frac{[base]}{[acid]}

[acid]=[acetic acid]=1mL.\frac{12mol}{1000mL} . \frac{1}{1L} = 0.012M

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If we add an acid, pH will decrease a little bit and if we add a base, pH wil increase a little bit.

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and now lets supose that we increase [acid] to 0.1 pH=4.76+log\frac{0.01}{0.1} = 3.76

Big changes in concentration of base or acid doesn´t produce big changes in pH, in that way the mix of sodium acetate with acetic acid is a good buffer solution.

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