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07.03.2021 •
Chemistry
Is the ph of a 0,5 M h2so4 1?
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Ответ:
H2SO4→2H++SO4−
⇒ 1 mole acid produce 2 mole H+
[H+]=0.05×2=0.10
pH=−log(0.05×2)=1
Ответ:
Answer : The final concentration of chloride ion is, 0.549 M
Explanation :
Barium chloride will furnish chloride ions as:
Given :
For barium chloride :
Molarity = 0.240 M
Volume = 28.7 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 28.7×10⁻³ L
Thus, moles of chlorine furnished by barium chloride is twice the moles of barium chloride as shown below:
Moles of chloride ions by barium chloride = 0.013776 moles
Chromium(II) chloride will furnish chloride ions as:
Given :
For chromium(II) chloride :
Molarity = 0.331 M
Volume = 17.5 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 17.5×10⁻³ L
Thus, moles of chlorine furnished by chromium(II) chloride is twice the moles of chromium(II) chloride as shown below:
Moles of chloride ions by chromium(II) chloride = 0.011585 moles
Total moles = 0.013776 moles + 0.011585 moles = 0.025361 moles
Total volume = (28.7×10⁻³ L) + (17.5×10⁻³ L) = 46.2×10⁻³ L
Concentration of chloride ions is:
Therefore, the final concentration of chloride anion is 0.549 M