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- please help me The aluminum in a 1.200g sample of impure ammonium aluminum sulfate was precipitatedwith aqueous ammonia as the hydrous Al2O3 · XH2O. The precipitate was filtered and ignitedat 100°C to give anhydrous Al2O3, which weighed 0.2001 g. Express the result of this analysisin terms of % Al.A precipitate of AgCl + AgBr weighs 0.8132 gram. On heating in a current of chlorine, the AgBr is converted into AgCl, the mixture losing 0.1450 gram in weight. What was the percentage of chlorine in the original precipitate?Balance the reaction below in acid by selecting the correct coefficient for each component.Cr2O72− + HNO2 → Cr3+ + NO3-
- Zinc(s) (MW=65.38), with a mass of 0.228 g, was reacted with 20.00 mL of NaClO (MW=74.44) according to the following unbalanced ionic equation. Determine the normality of NaClO. Zn(s) + ClO- → Zn(OH)2 + Cl- (in basic medium)Balance the following redox reactions: (a) In acidic solution, xenon trioxide reacts with iodide ion toproduce xenon gas, triiodide ion (I₃⁻), and water. (b) In basic solution, the hydrogen xenate ion (HXeO₄⁻) dispro-portionates to xenon gas, perxenate ion (XeO₆⁴⁻), water, andoxygen gas.(c) In basic solution, bismuthate ion (BiO₃⁻) reacts with man-ganese(II) ion to produce bismuth(III) and permanganate ions. (d) In basic solution, oxygen difluoride reacts to produce fluo-ride ion, oxygen gas, and water. (e) In acidic solution, manganese(IV) oxide reacts with sulfiteion to form manganese(II) ion, water, and dithionate ion(S₂O₆²⁻).(f) In one of the few reactions known for a statine, the oxidationof astinide ion by chlorine gas in acid solution produces astinateion (AtO₃⁻) and chloride ion.A sample containing NaCl, NaBr, and inert materials weighs 1.000 g. With excess AgNO3 it gives a precipitate of AgCl and AgBr, which weighs 0.5260 g. By heating this precipitate in a current of Cl2 gas, the AgBr is converted to AgCl and the resulting precipitate then weighs 0.4260 g. What is the %NaCl and %NaBr present in the original sample?
- Choi is fond of carbonated beverages so he crafted his own soda formulation called “Sodalicious.” Ulan, who is a fellow enthusiast, also made her own formulation which she called “Soda Pop!” to challenge his friend Choi. To know which formulation is better, they sought to determine the carbonic acid content of their soda formulations using titration. In the first part of their experiment, a 0.5 Mlabeled NaOH solution was standardized against 0.350 grams of KHP (MW = 204.22 g/mol) primary standard that is 99.6% pure. The titration required 3.16 mL of the NaOH solution to reach the phenolphthalein endpoint. In the second part of their experiment, Choi and Ulan independently prepared their samples by taking 25.0-mL of their soda sample and diluting it to 30.0 mL. Using the same titrant and indicator, Choi’s “Sodalicious” required 1.39 mL of the standardized titrant to reach the endpoint, while Ulan’s “Soda Pop!” required 0.926 mL of the same titrant to reach the endpoint. A. What is the…Choi is fond of carbonated beverages so he crafted his own soda formulation called “Sodalicious.” Ulan, who is a fellow enthusiast, also made her own formulation which she called “Soda Pop!” to challenge his friend Choi. To know which formulation is better, they sought to determine the carbonic acid content of their soda formulations using titration. In the first part of their experiment, a 0.5 Mlabeled NaOH solution was standardized against 0.350 grams of KHP (MW = 204.22 g/mol) primary standard that is 99.6% pure. The titration required 3.16 mL of the NaOH solution to reach the phenolphthalein endpoint. In the second part of their experiment, Choi and Ulan independently prepared their samples by taking 25.0-mL of their soda sample and diluting it to 30.0 mL. Using the same titrant and indicator, Choi’s “Sodalicious” required 1.39 mL of the standardized titrant to reach the endpoint, while Ulan’s “Soda Pop!” required 0.926 mL of the same titrant to reach the endpoint. D. Calculate…3. A precipitate of AgCl + AgBr weighs 0.8132 g. On heating on a current of Cl2, the AgBr is converted to AgCl, the mixture loses 0.1450 g in wt. Find the percentage Cl in the original sample.
- Write the net equation for precipitation of AgI when aqueous solutions of AgNO3 and Nal are mixed. Be sure to include state specifications .Express the concentration in % w/v that is equivalent to 0.5 M NaOHsolution.The concentration of arsenic in an insecticide can be determined gravimetrically through its precipitation as MgNH4AsO4. After the formation of the precipitate, it must be ignited for total conversion to Mg2As2O7, which is then cooled and weighed. Considering that a sample of 1,627 g of the insecticide produced 106.5 mg of Mg2As2O7, determine the% (m/m) As2O3 in the insecticide. Given the molar masses: Mg2As2O7 = 310.447 g / mol and As2O3 = 197.841 g / mol