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Acids and Bases: Riddle Quest

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Acids and Bases: Riddle Quest

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About this activity

Guess the substance from the clues

Created by

Alissar Al Najjar
Alissar Al Najjar
Lebanon

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Acids and Bases: Riddle Quest
 

Acids and Bases: Riddle QuestOnline version

Guess the substance from the clues

by Alissar Al Najjar
1

I am a substance that can turn blue litmus red, I taste sour to many, and I can donate protons in reactions. What am I?

Hints

My strength is often discussed with pH and Ka.

I start with a proton-donating behavior in acids.

I react with carbonates to release a gas.

2

you can find me in detergents , I have a high pH

Hints

I turn litmus paper blue

I accept H+

3

I am an acid that does not fully give up my proton in water. When I meet water, only a fraction leaves me behind, while the rest stay as I am. My strength is measured not by complete dissociation, but by a small constant that tells how much I brave to release a proton. I have a conjugate base that is stronger than I am. What am I?

Hints

A common example people learn about is a vinegar cousin that isn’t fully strong.

I reach an equilibrium between my undissociated form and my ions.

I don’t dissociate completely in water.

4

I am a small, pungent gas with a lone pair on nitrogen. I don’t fully break apart in water, but I raise pH by generating some hydroxide. Found in cleaners and fertilizers, I can sting your nose and eyes. What am I?

Hints

Commonly used in households as a cleaning agent and in fertilizers.

In water, I partially ionize to produce OH- ions.

I contain nitrogen with a lone pair.

 
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