How might you tell whether or not your toothpaste contained either calcium carbonate,CaC $\mathrm { O } _ { 3 }$ ,or baking soda,NaHC $\mathrm { O } _ { 3 }$ ,without looking at the ingredients label?
A)if the toothpaste bubbles when heated
B)if the toothpaste bubbles when added to ammonia,such as window cleaner
C)if the toothpaste produces a salt (NaCl)when added to HCl
D)if the toothpaste bubbles when added to vinegar

Question

Quizplus · Accepted Answer

Calcium carbonate (CaCO3) and baking soda (NaHCO3) both react with acids to produce carbon dioxide gas, which causes bubbling. Vinegar is a common household acid that can be used for this test. Heating or adding to ammonia (a base) would not specifically indicate the presence of these compounds, and the production of a salt like NaCl from adding HCl doesn't uniquely identify these substances either, as many reactions with HCl can produce salts.

How Might You Tell Whether or Not Your Toothpaste Contained O3\mathrm { O } _ { 3 }O3​

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