# Problem: Which of these compounds is not a base?a) CsOH b) NH3 c) Pb(OH)2 d) HNO3Many substances with common names are bases (e.g., the strong base sodium hydroxide is commonly known as lye). However, using the systematic names usually make it straightforward to identify the chemical formula of the base in question. Although there are other definitions of bases, bases can often be identified by the presence of the hydroxide ion, OH−.

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###### Problem Details

Which of these compounds is not a base?

a) CsOH

b) NH3

c) Pb(OH)

d) HNO3

Many substances with common names are bases (e.g., the strong base sodium hydroxide is commonly known as lye). However, using the systematic names usually make it straightforward to identify the chemical formula of the base in question. Although there are other definitions of bases, bases can often be identified by the presence of the hydroxide ion, OH.