2 years ago

When a glow stick is crushed and shaken, the two liquids mix and the stick glows.

Chemistry

1 answer:

Mars2501 [29]2 years ago

3 0

Answer:

A chemical change has occurred, with energy being given off.

Explanation:

The liquids mix and the stick gives off energy in light form

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What is the concentration of H+ ions at a pH = 11?

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Answer:

$\huge 1 × {10}^{-11} \: \: M$

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ {H}^{+} ]$

Since we are finding the H+ ions we find the antilog of the pH

So we have

$11 = - log({H}^{+}) \\ {H}^{+} = {10}^{ - 11}$

We have the final answer as

$1 × {10}^{-11} \: \: M$

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