2 years ago

Which of the following is true for the theoretical yield of a reaction? (1 point)

Chemistry

1 answer:

just olya [345]2 years ago

3 0

Answer:

It is always twice the value of the actual yield.

Explanation:

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When atmospheric pressure decreases, the mercury height in a barometer

Free_Kalibri [48]

Answer:

Decreases

Explanation:

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2 years ago

What is the solubility of La(IO₃)₃ in a solution that contains 0.100 M IO₃⁻ ions? (Ksp of La(IO₃)₃ is 7.5 × 10⁻¹²)

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Solution and Explanation:

[La3+] = 0.1 M

At the equilibrium:

La(IO3)3 <----> La3+ + 3 IO3-

0.1 +s 3s

$\mathrm{Ksp}=[\mathrm{La} 3+][\mathrm{IO} 3-]^{\wedge} 3$

$7.5 * 10^{\wedge}-12=(0.1+s) *(3 s)^{\wedge} 3$

Since Ksp is small, s can be ignored as compared to the 0.1

The above shown expression thus becomes:

$7.5 * 10 \wedge-12=(0.1) *(3 s) \wedge 3$

$7.5 * 10^{\wedge}-12=0.1 * 27(\mathrm{s})^{\wedge} 3$

$s=1.406 * 10^{\wedge}-4 \mathrm{M}$

Answer: 1.4*10^-4 M

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2 years ago