Chemistry Questions and Answers October 07, 2019

Calculate the standard cell emf for galvanic cells for the cell reaction 3Zn(s) + 2 Bi 3+ (aq) 3Zn 2+ (aq) + 2 Bi(s) Answer in units of V.

Classify and name the following substances. Chemical formula Classification Name a. P 4 b. LiBr c. SnCl 2 d. K 2 SO 4 e. Fe(ClO 3 ) 2 f. CS 2 g. Sr(OH) 2 h. N 2 O 4 i. Al(NO 3 ) 3 j. NO k. NalO 3 l. HBrO 3 m. KMnO 4 n. Ti(CO 3 ) 2

Complete the table below by writing the symbols for the cation and anion that make up each ionic compound. The first row has been completed for you.

anion ionic compound cation Na CI Na CI NiO oa) Mn, (PO,). MnF. Fe (NO,),

Determine the % of acetic acid (MM = 60.05 g/mol) in a 2.00 mL vinegar sample that has a mass of 2.08 to two decimal places if 16.63 mL of a 0.098 M NaOH solution were used to titrate the vinegar sample.

During a chromatography experiment, a student calculated two Rf values. They are A: 0.62 and B: 0.30. The solvent front for the original chromatogram was 12.0 cm. If A and B were run on a second chromatogram and the solvent front was 25.cm, how far apart would A be from B?

for each reaction, label the lewis acid and base. Draw the product of the reaction. Use curved arrow notation to show the movement of electron pairs.

F CH3 FB0 CH, BF, CH,CH, b OH b. (CH,),CH (CH2CHOH

If the total tared mass of a tin oxide formed in an experiment weighs 0.703 grams and it contains 0.544 g of Sn (formula weight = 118.7 amu), calculate the amount of oxygen it contains and determines the simplest formula (empirical formula) of the oxide. (Only tin and oxygen are present in the compound. The formula weight of oxygen = 16.0 amu.)

why does the lucas test fail when the alcohol is not soluble in the reagent