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DanielleElmas [232]
3 years ago
12

Elements found in group 1A on the periodic table display which properties?

Chemistry
2 answers:
hram777 [196]3 years ago
6 0

Elements found in group 1A on the periodic table display Alkali metals. Alkali Metals is your answer.

slega [8]3 years ago
3 0

The Alkali Metals. Group 1A of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).

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3 years ago
How does a buffer resist change in pH upon addition of a strong acid? The strong acid reacts with the strong base in the buffer
MrRa [10]

Answer:

The strong acid reacts with the weak base in the buffer to form a weak acid, which produces few H+ ions in solution and therefore only a little change in pH.

Explanation:

When a strong acid is added to the buffer, the acid dissociates and furnish hydrogen ions which combine with the conjugate of the weak acid, forming weak acid. The weak acid dissociates to only some extent and can furnish only some protons and there is no significant change in the pH.

Hence, option B is correct.

4 0
3 years ago
During a titration, the pH of an analyte solution containing HA(aq) is 3.92 and the ratio of [A–]/[HA] is 0.41. What is the Ka o
Solnce55 [7]

Answer:

Ka=4.71x10^{-4}

Explanation:

Hello there!

In this case, according to the Henderson-Hasselbach equation, it is possible to write:

pH=pKa+log(\frac{[A^-]}{[HA]} )

Next, since we are given the pH and the [A–]/[HA] ratio, we can solve for the pKa as shown below:

pKa=pH-log(\frac{[A^-]}{[HA]} )

Now, we plug in the values to obtain:

pKa=3.92-log(0.41 )\\\\pKa=3.33

Next, Ka is:

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Best regards!

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