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QUESTION 21 If 22 mL of 0.136M MgCl2 is needed to completely react 15 mL of AgNO3 solution, what is the molarity of AgNO3?
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Solution: Calculate molarity of AgNO3: Lalanced Chemicol Reaction: LS) Ca9) (42) (aą) Molar iky of Mjclz F 0.136/ volume of MgCl2 =22 - 0.022 L Moles o Mg - SCli - Con cent ration x volume - 0. 136 mol. = 0. 00299 mo). Mgc/2 o. 00299 mol. Mali x nol-As vo, 0.00598 MOI. A9N0 Moles of Ag Nog from Mg ci2 2 mol. MACI Volume Ag NO3 0.015L lo00 m Molarity Ag403 . No. of moles of Agw03 volume of A No So lukion O 00 5 98 mol. 0.015L O. 3987 mol -0.3987M .. Molarity of Agvo3 - 0. 3987M

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