3 years ago

A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?

1 answer:

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Answer:

it will turn blue black to any substance

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lys-0071 [83]

Answer:

$\Delta _rG=2832.2J/mol$

Explanation:

Hello,

In this case, the Gibbs free energy of that reaction is computed by computing the equilibrium constant as:

$K=\frac{p_{NOCl}^2}{p_{NO}^2p_{Cl_2}} =\frac{8.64^2}{9.47^2*2.61}=0.319$

Hence the Gibbs free energy:

$\Delta _rG=-RTlog(K)=-8.314\frac{J}{mol*K}*298.15K*ln(0.319)\\\\\Delta _rG=2832.2J/mol$

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FALSE!!! Thermal energy can be transformed to heat.

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