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olga2289 [7]
3 years ago
5

Criteria for evaluating alternative solutions includes all of the following except :

Chemistry
1 answer:
VMariaS [17]3 years ago
4 0

Criteria for evaluating alternative solutions includes all of the following except :

a. Appropriateness
b. Prediction
c. Adequacy
d. Efficiency

Criteria for evaluating alternative solutions includes all of the following except prediction. The answer is letter B. 

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A gas occupies 900.0 mL at a temperature of 300K. What is the volume at 132.0 °C?
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V1/T1=V2/T2
V2=(V1)(T2)/T1
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3 years ago
What is the ph of a buffer prepared by adding 0.809 mol of the weak acid ha to 0.608 mol of naa in 2.00 l of solution? The disso
Anarel [89]

The pH of the buffer is 6.1236.

Explanation:

The strength of any acid solution can be obtained by determining their pH. Even the buffer solution strength of the weak acid can be determined using pH. As the dissociation constant is given, we can determine the pKa value as the negative log of dissociation constant value.

pKa=-log[H] = - log [ 5.66 * 10^{-7}]\\ \\pka = 7 - log (5.66)=7-0.753=6.247\\\\pka = 6.247

The pH of the buffer can be known as

pH = pK_{a} + log[\frac{[A-]}{[HA]}}]

The concentration of [A^{-}] = Moles of [A]/Total volume = 0.608/2 = 0.304 M\\

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pH = 6.247 + log [ 0.304/0.404]

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So, the pH of the buffer is 6.1236.

5 0
4 years ago
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