Chữ hơi xấu mn cố dịch r giải hộ mình với
Tks trc😅😅😅Cho 4,6 9 Na tać dung với do0 ml nube thu đc dung dich và
hhi Hy.
a) Tunl the tich H, ( dkac)
b) Tuil n

Question

Chữ hơi xấu mn cố dịch r giải hộ mình với 
Tks trc😅😅😅

vohaiy2806 · Answer

`n_{Na}=\frac{4,6}{23}=0,2(mol)`
`a)` `2Na+2H_2O	o 2NaOH+H_2`
`0,5n_{Na}=n_{H_2}`
`=> n_{H_2}=0,1(mol)`
`=> V_{H_2}=0,1.22,4=2,24(l)`
`n_{NaOH}=n_{Na}=0,2(mol)`
`b)``C_{M \ A}=\frac{0,2}{0,1}=2M`
`c)` `m_{	ext{dd nước}}=D.V=100.1=100g`
Bảo toàn khối lượng:
`m_{	ext{dd A}}=100+4,6-0,1.2=104,4g`
`=> C%_{A}=\frac{0,2.40.100%}{104,4}\approx 7,67%`

nhungvieccanlam · Answer

nNa=4,623=0,2(mol)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">nNa=4,623=0,2(mol)nNa=4,623=0,2(mol)
a)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">)a) 2Na+2H2O&#x2192;2NaOH+H2" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">2Na+2H2O→2NaOH+H22Na+2H2O→2NaOH+H2
0,5nNa=nH2" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">0,5nNa=nH20,5nNa=nH2
&#x21D2;nH2=0,1(mol)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒nH2=0,1(mol)⇒nH2=0,1(mol)
&#x21D2;VH2=0,1.22,4=2,24(l)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒VH2=0,1.22,4=2,24(l)⇒VH2=0,1.22,4=2,24(l)
nNaOH=nNa=0,2(mol)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">nNaOH=nNa=0,2(mol)nNaOH=nNa=0,2(mol)
b)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">)b)CM&#xA0;A=0,20,1=2M" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">CM A=0,20,1=2MCM A=0,20,1=2M
c)" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">)c) mdd n&#x1B0;&#x1EDB;c=D.V=100.1=100g" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">mdd nước=D.V=100.1=100gmdd nước=D.V=100.1=100g
áp dung định luật Bảo toàn khối lượng:
mdd A=100+4,6-0,1.2=104,4g" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">mdd A=100+4,6−0,1.2=104,4gmdd A=100+4,6-0,1.2=104,4g
&#x21D2;C%A=0,2.40.100%104,4&#x2248;7,67%" role="presentation" style="margin: 0px; padding: 1px 0px; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.15px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒C%A=0,2.40.100%104,4≈7,67%

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