3 years ago

Calcium nitrate, Ca(NO3)2 , is a(n) ___________________.

Chemistry

2 answers:

Aleonysh [2.5K]3 years ago

6 0

B. Compound

Calcium nitrate is an inorganic compound

Serhud [2]3 years ago

5 0

It is a compound. This is because it is organic so it is therefore a compound.

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The pH of a saturated solution of a metal hydroxide MOH is 10.15. Calculate the Ksp for this compound.

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$Ksp=2.00x10^{-8}$

Explanation:

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In this case, since the pH of the given metal is 10.15, we can compute the pOH as shown below:

$pOH=14-pH=14-10.15=3.85$

Now, we compute the concentration of hydroxyl ions in solution:

$[OH^-]=10^{-pOH}=10^{-3.95}=1.41x10^{-4}M$

Now, since this hydroxide has the form MOH, we infer the concentration of OH- equals the concentration of M^+ at equilibrium, assuming the following ionization reaction:

$MOH(s)\rightarrow M^+(aq)+OH^-(aq)$

Whose equilibrium expression is:

$Ksp=[M^+][OH^-]$

Therefore, the Ksp for the saturated solution turns out:

$Ksp=1.41x10^{-4}*1.41x10^{-4}\\\\Ksp=2.00x10^{-8}$

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