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My name is Ann [436]
3 years ago
8

Chemical changes

Chemistry
1 answer:
Alex777 [14]3 years ago
6 0
The correct answer is that chemical changes form new compounds. Chemical change is a change where the substance changes in identity or form new substances after undergoing a process. On the other hand, a physical change is a change in the properties of matter that does not change the identity of the substance. 
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garri49 [273]

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CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

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To answer this question we must know Kb of CH3CH2NH2 is 5.6x10⁻⁴, and for C6H5NH2 is 4.0x10⁻¹⁰. And the CH3CH2NH3+ and C6H5NH3+ are related with these substances because are their conjugate base. That means:

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