A) + 1
B) - 1
C) - 3
D) - 2
Correct Answer: B
Solution :
\[{{\overset{*\,\,\,}{\mathop{NH}}\,}_{2}}OH\] \[x+2\,(+1)-2+1=0\] \[x+2-2+1=0\]; \[x=-1\].
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