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Tính tỉ lệ thể tích dung dịch HCl 18,25%

tính tỉ lệ thể tích dung dịch HCl 18,25%(D=1,2ghttps:https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.hoc247.nethttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.imagehttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.faqhttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.data2https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.775362_.ml)và thể tích dung dịch HCl 13%(D=1,123ghttps:https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.hoc247.nethttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.imagehttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.faqhttps:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.data2https:https://hoc247.net/image/faq/data2/710107_.https://hoc247.net/image/faq/data2/710107_.hoc247.nethttps://hoc247.net/image/faq/data2/710107_.imagehttps://hoc247.net/image/faq/data2/710107_.faqhttps://hoc247.net/image/faq/data2/710107_.data2https://hoc247.net/image/faq/data2/710107_.185200_.775362_.ml)để pha thành dung dịch HCl 4,5M ?

  bởi thu hảo 21/07/2019
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Câu trả lời (1)

  • \(C_M\)\(_{HCl}\)\(_{18,25\%}\)=\(\dfrac{10.1,2.18,25}{36,5}\)=6(M) (1)

    \(C_M\)\(_{HCl}\)\(_{13\%}\)=\(\dfrac{10.1,123.13}{36,5}\)\(\simeq\)4(M) (2)

    Đặt \(V_{HCl\left(1\right)}\)=x(l)

    \(V_{HCl\left(2\right)}\)=y(l)

    Ta có: \(\dfrac{n_{HCl\left(1\right)}}{V_{HCl\left(1\right)}}\)= 6

    \(\dfrac{n_{HCl\left(2\right)}}{V_{HCl\left(2\right)}}\)= 4

    Suy ra: \(n_{HCl\left(1\right)}\)=6x(mol)

    \(n_{HCl\left(2\right)}\)=4x(mol)

    Do đó: \(C_M\)\(_{HCl}\)\(_{4,5M}\)=\(\dfrac{6x+4y}{x+y}\)=4,5

    \(\Rightarrow\)\(6x+4y\)=\(4,5x+4,5y\)

    \(\Rightarrow\)\(1,5x\)=\(0,5y\)

    \(\Rightarrow\dfrac{x}{y}\)=\(\dfrac{1}{3}\)

    Vậy tỉ lệ thể tích dung dịch là 1 : 3 để pha thành dung dịch HCl 4,5M

      bởi Hoàng Nhân 21/07/2019
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