Question

Suppose we have bought a cleaner at the grocery store, and notice it gives off a gas that turns moist red litmus paper blue. Which of the following chemical species *could* be the culprit?

Group of answer choices

Acetic Acid

Ammonia

Sodium ions

Hydrogen Gas

Question 21

You notice a white, crystalline powdered substance in your pantry but have no idea what it is. Suppose the substance was bought at the grocery store years ago, and the label has worn off. You carefully make a solution of the substance (it dissolves in water). Recalling what you know from Chemistry, you decide to add a couple drops of silver nitrate to your solution. You notice that a white precipitate falls out of solution. What ions are most likely present?

Group of answer choices

Sodium ions

Chloride ions

Ammonium ions

Potassium ions

Question 3

What salt is found in baking soda?

Group of answer choices

Sodium chloride

Carbon dioxide

Sea salt

Sodium bicarbonate

Question 4

What salt is found in Epsom salt?

Group of answer choices

Potassium chloride

Table salt

Magnesium sulfate

Sodium chloride

Question 5

In the salt, sodium bicarbonate, which ion is the cation?

Group of answer choices

Carbon ion

Sodium ion

Calcium ion

Bicarbonate ion

Question 6

In the salt, sodium bicarbonate, which ion is the anion?

Group of answer choices

Bicarbonate ion

Ammonium ion

Chlorine ion

Phosphate ion

Question 7

From the grocery store, you decide to purchase a box of baking soda (sodium bicarbonate) and vinegar (acetic acid). You pour an ample amount of baking soda in the bottom of a vase (like you would put flowers in), followed by an equal mass of vinegar. With lightning speed, you carefully attach the balloon to the opening of the vase (suppose it's a small vase) and watch the balloon inflate. Which of the following gasses is responsible for the balloon's expansion that ensues?

Group of answer choices

Hydrogen Gas

Oxygen Gas

Carbon dioxide

Nitrogen Gas

Question 8

This is a safety question: Which of the following describes what you do with silver nitrate that you use in a lab?

a) Pour it straight down the drain when done.

b) Heat up the glassware it's contained in, potentially using a Bunsen burner, until its all evaporated and wash out any residue in the bottom of the glassware

c) Drink it.

d) When done with the experiment using silver nitrate, tell your instructor to dispose of it for you. It must go into a special container that is disposed of by a licensed and OSHA approved chemical waste disposal company. Silver nitrate NEVER goes down the drain.

Group of answer choices

d)

b)

a)

c)

Question 9

Another Safety Question: Can Calcium Hydroxide ever be poured down the sink?

a) Yes, but ONLY if it is properly neutralized with a base so that the final pH is around 7, and water and a safe salt (such as sodium chloride, potassium chloride, or calcium chloride) is the product of neutralization.

b) No. Calcium hydroxide can never be poured down the drain even if neutralized.

c) Yes. It is fine to pour straight down the drain as is. No neutralization required.

d) Yes, but you have to light it on fire and let it all burn out, then throw the ashes in the trash.

Group of answer choices

a)

b)

c)

d)

10.

True or False: Bases like sodium hydroxide and calcium hydroxide are very corrosive, and can cause chemical burns. This is why we can never allow these substances to come into contact with our skin.

Group of answer choices

True

False

Answer 1

1)- Ammonia

As we know in presence of moisture ammonia form ammonium hydroxide which is basic in nature.

2)- chloride ion

Silver nitrate form silver cloride ppt in presence of chloride ions

3)- Sodium bicarbonate is present in baking soda

4)-Magnesium sulfate is found in Epsom salt

5)-Sodium ion