Question

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Answer 1

3.Cm=n/Vs-CORESPONDENT-a-

n=m/M

n=3,65/36,5

n=0,1 moli

Cm=0,1/1=0,1M

4.H2O-CARACTER AMFOTER=pH=7=pOH-raspuns e

5. n=m/M

n=20/40=0,5 moli

Cm=0,5/1=0,5M-raspuns b

1.[HO-]=10-8

POH=8-RASPUNS,

pH+pOH=14

pH+8=14

pH=6-raspuns c

2.din concentratia ionilor de hidroniu

pH=12

pOH=14-12

pOH=2-raspuns d