Which is the conjugate base of methylamine (CH 3 NH 2 )?

So here's a practice problem on acids and bases asking which is the conjugate base of methylamine, which is CH3 NH2. And so recall that conjugate acids and bases, they only differ from each other by just a single hydrogen atom and a single charge for that matter. And so here we have methylamine which is c h 3 and h 2, and so its conjugate base is gonna be one less hydrogen atom. And so, we know that, CH3, so here we have our NH2, we know that the carbon atoms, carbon hydrogen atoms, do not tend to be acidic hydrogens, whereas, this NH 2, this, amino group here can have an acidic hydrogen. So our acidic hydrogen is gonna be one of these, hydrogens branching off of the, nitrogen. And so, recall that the conjugate base is gonna differ by just one hydrogen, so we're still gonna have our, CH3, And then the nitrogen is going to lose 1 of its hydrogen, 1 of its hydrogens and therefore, it's gonna have an additional, negative charge to it. So it's gonna have a a negative charge. And so, we're looking for this molecule here. And so when we look at our answer options, we see that option a here is the only one that's a good representation of the conjugate base of methylamine. So this one here has a positive charge to it, which we know is incorrect. This would be the, conjugate acid here. This one here looks like it lost the hydrogen on its carbon, which we know is not gonna be the case. This one over here looks like it somehow gained an additional oxygen, which is definitely not correct and we know that it's not none of the above. So all of these are incorrect and we can indicate that, a, here's the correct answer and I'll see you guys in our next practice video.

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1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
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12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
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Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

2. Water

Acids and Bases

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2. Water

Acids and Bases

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Multiple Choice

Which is the conjugate base of methylamine (CH ₃NH₂)?

CH₃NH^-

CH₃NH₃⁺

CH₂NH₂^-

CH₃NH₂OH^-

None of the above.

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Verified step by step guidance

Understand the concept of a conjugate base: A conjugate base is formed when an acid donates a proton (H+). In this case, methylamine (CH3NH2) acts as a base, so its conjugate base is formed by removing a proton from it.

Identify the structure of methylamine: Methylamine is CH3NH2, which consists of a methyl group (CH3-) attached to an amino group (NH2).

Determine the removal of a proton: When methylamine donates a proton, it loses an H+ ion from the NH2 group, resulting in the formation of CH3NH-.

Compare with the given options: The conjugate base of methylamine, after losing a proton, is CH3NH-.

Verify the answer: Ensure that CH3NH- is listed among the options and confirm it as the correct conjugate base of methylamine.

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Struggling with Biochemistry?

Which is the conjugate base of methylamine (CH 3NH2)?

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Acids and Bases practice set

Which is the conjugate base of methylamine (CH ₃NH₂)?