Հետազոտության գրավիմետրիկ (կշռային) եղանակ: Նստվածքագոյացման գրավիմետրիա

$\text{MgCl}_2(լ-թ)+2\text{AgNO}_3(լ-թ) \rightarrow2\text{AgCl}(պ)+\text{Mg(NO}_3)_2(լ-թ)$start text, M, g, C, l, end text, start subscript, 2, end subscript, left parenthesis, լ, minus, թ, right parenthesis, plus, 2, start text, A, g, N, O, end text, start subscript, 3, end subscript, left parenthesis, լ, minus, թ, right parenthesis, right arrow, 2, start text, A, g, C, l, end text, left parenthesis, պ, right parenthesis, plus, start text, M, g, left parenthesis, N, O, end text, start subscript, 3, end subscript, right parenthesis, start subscript, 2, end subscript, left parenthesis, լ, minus, թ, right parenthesis

$\text {մոլ AgCl}(պ)=1{,}032\,\cancel{\text {գ AgCl}} \cdot \dfrac{1\,\text{մոլ AgCl}}{143{,}32\,\cancel{\text{գ AgCl}}}=0{,}007201\,\text{մոլ AgCl}=7{,}201 \cdot 10^{-3}\,\text{մոլ AgCl}$start text, մ, ո, լ, space, A, g, C, l, end text, left parenthesis, պ, right parenthesis, equals, 1, comma, 032, start cancel, start text, գ, space, A, g, C, l, end text, end cancel, dot, start fraction, 1, start text, մ, ո, լ, space, A, g, C, l, end text, divided by, 143, comma, 32, start cancel, start text, գ, space, A, g, C, l, end text, end cancel, end fraction, equals, 0, comma, 007201, start text, մ, ո, լ, space, A, g, C, l, end text, equals, 7, comma, 201, dot, 10, start superscript, minus, 3, end superscript, start text, մ, ո, լ, space, A, g, C, l, end text

$\text{մոլ MgCl}_2(լ-թ)=7{,}201\times10^{-3} \,\cancel{\text{մոլ AgCl}} \cdot \dfrac{1\,\text{մոլ MgCl}_2}{2\,\cancel{\text{մոլ AgCl}}}=3{,}600 \cdot 10^{-3} \,\text{մոլ MgCl}_2$start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, left parenthesis, լ, minus, թ, right parenthesis, equals, 7, comma, 201, times, 10, start superscript, minus, 3, end superscript, start cancel, start text, մ, ո, լ, space, A, g, C, l, end text, end cancel, dot, start fraction, 1, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, divided by, 2, start cancel, start text, մ, ո, լ, space, A, g, C, l, end text, end cancel, end fraction, equals, 3, comma, 600, dot, 10, start superscript, minus, 3, end superscript, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript

$\text{զանգված MgCl}_2=3,600 \cdot 10^{-3} \,\cancel{\text{մոլ MgCl}_2} \cdot \dfrac{95,20 \,\text{գ MgCl}_2}{1\,\cancel{\text{մոլ MgCl}_2}}=0,3427\,\text{գ MgCl}_2$start text, զ, ա, ն, գ, վ, ա, ծ, space, M, g, C, l, end text, start subscript, 2, end subscript, equals, 3, comma, 600, dot, 10, start superscript, minus, 3, end superscript, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, dot, start fraction, 95, comma, 20, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript, divided by, 1, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, end fraction, equals, 0, comma, 3427, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript

$\text{զանգվածային % MgCl}_2= \dfrac{0,3427 \,\text{գ MgCl}_2}{0,7209\,\text{գ խառնուրդ}} \times100\% =47,54\% \,\text{MgCl}_2\,\text{խառնուրդում}~~~~~~\text{(Շնոհակալություն Իգոր)}$

$\text{զանգված MgCl}_2=\underbrace{1,032\,\cancel{\text {գ AgCl}} \cdot \dfrac{1\,\cancel{\text{մոլ AgCl}}}{143,32\,\cancel{\text{գ AgCl}}}} \cdot \underbrace{\dfrac{1\,\cancel{\text{մոլ MgCl}_2}}{2\,\cancel{\text{մոլ AgCl}}}} \cdot \underbrace{\dfrac{95,20 \,\cancel{\text{գ MgCl}_2}}{1\,\cancel{\text{մոլ MgCl}_2}}}=0,3427\,\text{գ MgCl}_2$start text, զ, ա, ն, գ, վ, ա, ծ, space, M, g, C, l, end text, start subscript, 2, end subscript, equals, start underbrace, 1, comma, 032, start cancel, start text, գ, space, A, g, C, l, end text, end cancel, dot, start fraction, 1, start cancel, start text, մ, ո, լ, space, A, g, C, l, end text, end cancel, divided by, 143, comma, 32, start cancel, start text, գ, space, A, g, C, l, end text, end cancel, end fraction, end underbrace, dot, start underbrace, start fraction, 1, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, divided by, 2, start cancel, start text, մ, ո, լ, space, A, g, C, l, end text, end cancel, end fraction, end underbrace, dot, start underbrace, start fraction, 95, comma, 20, start cancel, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, divided by, 1, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, end fraction, end underbrace, equals, 0, comma, 3427, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript

$~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\text{Քայլ 1:} ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\text{Քայլ 2:} ~~~~~~~~~~~~~~~~~~\text{Քայլ 3:}$space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, start text, Ք, ա, յ, լ, space, 1, colon, end text, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, start text, Ք, ա, յ, լ, space, 2, colon, end text, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, start text, Ք, ա, յ, լ, space, 3, colon, end text
$~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\text{ AgCl-ի մոլի հաշվարկ}~~~~\text{մոլային հարաբերության օգտագործում}\text{ MgCl}_2-ի զանգվածի հաշվարկ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~$space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, start text, space, A, g, C, l, negative, ի, space, մ, ո, լ, ի, space, հ, ա, շ, վ, ա, ր, կ, end text, space, space, space, space, start text, մ, ո, լ, ա, յ, ի, ն, space, հ, ա, ր, ա, բ, ե, ր, ո, ւ, թ, յ, ա, ն, space, օ, գ, տ, ա, գ, ո, ր, ծ, ո, ւ, մ, end text, start text, space, M, g, C, l, end text, start subscript, 2, end subscript, minus, ի, զ, ա, ն, գ, վ, ա, ծ, ի, հ, ա, շ, վ, ա, ր, կ, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space, space

$\text{MgCl}_2(լ-թ)+\text{AgNO}_3(լ-թ) \rightarrow\text{AgCl}(պ)+\text{Mg(NO}_3)_2(լ-թ)~~~~~~~~~~~(\text{\redD{Զգուշացում}․ Հավասարեցված չէ}։)$start text, M, g, C, l, end text, start subscript, 2, end subscript, left parenthesis, լ, minus, թ, right parenthesis, plus, start text, A, g, N, O, end text, start subscript, 3, end subscript, left parenthesis, լ, minus, թ, right parenthesis, right arrow, start text, A, g, C, l, end text, left parenthesis, պ, right parenthesis, plus, start text, M, g, left parenthesis, N, O, end text, start subscript, 3, end subscript, right parenthesis, start subscript, 2, end subscript, left parenthesis, լ, minus, թ, right parenthesis, space, space, space, space, space, space, space, space, space, space, space, left parenthesis, start text, start color #e84d39, Զ, գ, ո, ւ, շ, ա, ց, ո, ւ, մ, end color #e84d39, ․, space, Հ, ա, վ, ա, ս, ա, ր, ե, ց, վ, ա, ծ, space, չ, է, end text, ։, right parenthesis

$\text{զանգված% MgCl}_2= \dfrac{0,6854 \,\text{գ MgCl}_2}{0,7209\,\text{գ լուծույթ}} \times100\% =95,08\% \,\text{MgCl}_2\,\text{լուծույթում}~~~(\text{համեմատած 47,54%-ի հետ })$

$\text{մոլ AgNO}_3=0,7209\,\cancel{\text{գ MgCl}_2} \cdot \dfrac{1\,\cancel{\text{մոլ MgCl}_2}}{95,20\,\cancel{\text{գ MgCl}_2}} \cdot \dfrac{2\,\text{մոլ AgNO}_3}{1\,\cancel{\text{մոլ MgCl}_2}}=1,514 \cdot 10^{-2} \,\text{մոլ AgNO}_3$start text, մ, ո, լ, space, A, g, N, O, end text, start subscript, 3, end subscript, equals, 0, comma, 7209, start cancel, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, dot, start fraction, 1, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, divided by, 95, comma, 20, start cancel, start text, գ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, end fraction, dot, start fraction, 2, start text, մ, ո, լ, space, A, g, N, O, end text, start subscript, 3, end subscript, divided by, 1, start cancel, start text, մ, ո, լ, space, M, g, C, l, end text, start subscript, 2, end subscript, end cancel, end fraction, equals, 1, comma, 514, dot, 10, start superscript, minus, 2, end superscript, start text, մ, ո, լ, space, A, g, N, O, end text, start subscript, 3, end subscript