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3 years ago

Which of the following is NOT a property of a base?

Chemistry

1 answer:

inna [77]3 years ago

8 0

Bases turns cabbage juice yellow or green is not a property of bases.

<u>Explanation:</u>

As per the property of the bases, the correct statements are:

The taste of the bases are bitter.
Solutions of bases are slippery in nature
Bases reacts with the metals to form hydrogen gas and a salt.
For example, sodium hydroxide reacts with zinc metal to form sodium zincate salt and hydrogen gas.

Wrong statement:

It turns cabbage juice yellow or green, whereas it turns the cabbage juice blue or green and acids turns cabbage juice red or pink.

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2 years ago

Determine the pH of 0.050 M HCN solution. HCN is a weak acid with a Ka equal to 4.9 x 10-10<br> DONE

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Answer:

The pH of the solution is 5.31.

Explanation:

Let " $\alpha$ is the dissociation of weak acid - HCN.

The dissociation reaction of HCN is as follows.

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Equilibrium c(1- $\alpha$ ) c $\alpha$ c $\alpha$

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In this case weak acids $\alpha$ is very small so, (1- $\alpha$ ) is taken as 1.

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$\alpha=\sqrt\frac{ka}{c}$

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$[H_{3}O^{+}]=0.05\times 9.8\times 10^{-4}= 4.9\times10^{-6}$

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plz can i get brainliest

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