Answer is: concentration of hydronium ions is 8.13·10⁻⁴ M.<span>
c(HNO</span>₂) = 0.055 M.<span>
c(NaNO</span>₂) = 0.10 M.<span>
Ka(HNO</span>₂) = 4.5·10⁻⁴.<span>
This is buffer solution, so use Henderson–Hasselbalch equation:
pH = pKa + log(c(NaNO</span>₂) ÷ c(HNO₂)).<span>
pH = -log(4.5·10</span>⁻⁴) + log(0.055 M ÷ 0.10 M).<span>
pH = 3.35 - 0.26.
pH = 3.09.
</span>[H₃O⁺<span>] = 10</span>∧(-3.09).
[H₃O⁺] = 8.13·10⁻⁴ M.
Carbon dioxide is only slightly soluble in water. One liter of water dissolves about 1.4 gm of the gas at 25 degree Celsius. Chlorine and hydrogen sulphide are much more soluble in water. A solution of CO2 in water is called carbonic acid (H20 + CO2= H2CO3).
Answer:
Saturated solution.
Explanation:
- Kindly see the attached image, the curve with brown line is for KClO₃, and according to the curve at 30
°C the solubility of KClO₃ per 100 g of water is 10 g.
So, 10.0 g of KClO₃ forms a saturated solution.
Answer:
Tính nồng độ mol của dung dịch khi có 160g dung dịch CusO4 tan trong 2 Lít dung dịch
