1. How would using double the volume of hydrochloric acid have affected the empirical formula of zinc chloride? 2. Suppose that you had not driven off all the water from the zinc chloride. How would t...
1. How would using double the volume of hydrochloric acid have affected the empirical formula of zinc chloride?
2. Suppose that you had not driven off all the water from the zinc chloride. How would this error have affected the empirical formula for zinc chloride?
Homework Answers
Your tool of choice here will be the mole ratio that exists between zinc metal, Zn, and hydrochloric acid, :HCl, in the balanced chemical equation.
Zn(s]+2HCl(aq]→ZnCl2(aq]+H2(g]↑⏐
You're dealing with a single replacement reaction in which zinc displaces the hydrogen from hydrochloric acid. The products of the reaction are aqueous zinc chloride and hydrogen gas.
Now, as you can see from the balance chemical equation, a 1:2 mole ratio exists between the two reactants.
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1. How would using double the volume of hydrochloric acid have affected the empirical formula of zinc chloride? 2. Suppose that you had not driven off all the water from the zinc chloride. How would t...
1. How would using double the volume of hydrochloric acid have affected the empirical formula of...
1. How would using double the volume of hydrochloric acid have affected the empirical formula of zinc chloride? 2. Suppose that you had not driven off all the water from the zinc chloride. How would this error have affected the empirical formula for zinc chloride?
1. How would you determine if you have heated the sample long enough to drive off...
1. How would you determine if you have heated the sample long enough to drive off all the water from the hydrate? 2. A compound is made of 30.9% of Cu, 13.6 % Si, and 55.5% F. a. What is the empirical formula of the anhydrous salt? b. 1.00 gram of this compound is subject to high moisture environment. The resulting hydrate weighs 1.53 grams. What is the formula of the hydrate?
()UESTIONS 1. If you had used a different mass of magnesium metal, would you expect the...
()UESTIONS 1. If you had used a different mass of magnesium metal, would you expect the empirical formula of the compound to be the same? Explain. 2. If you had omitted steps 12 and 13 from the experiment, how would this omission have affected your results in terms of the empirical formula of the magnesium oxide? In other words, would the ratio of the magnesium to the oxygen have been greater or less than the obtained ratio? 3. From the...
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Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown centained only sulfate ion. Which test would most quickly 3. Consider each set of results below which were carried out on a solution containing either (1)one of the six anions studied in this experiment, or (2) none...
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Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown contained only sulfate ion. Which test would most quickly (that is, in the fewest steps) confirm your hypothesis? Explain. Consider each set of results below which were carried out on a solution containing either (1)one of the...
1. How would you determine if you have heated the sample long enough to drive off all the water from the hydrate? 2. A compound is made of 30.9% of Cu, 13.6 % Si, and 55.5% F. a. What is the empirical formula of the anhydrous salt? b. 1.00 gram of this compound is subject to high moisture environment. The resulting hydrate weighs 1.53 grams. What is the formula of the hydrate?
()UESTIONS 1. If you had used a different mass of magnesium metal, would you expect the empirical formula of the compound to be the same? Explain. 2. If you had omitted steps 12 and 13 from the experiment, how would this omission have affected your results in terms of the empirical formula of the magnesium oxide? In other words, would the ratio of the magnesium to the oxygen have been greater or less than the obtained ratio? 3. From the...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown centained only sulfate ion. Which test would most quickly 3. Consider each set of results below which were carried out on a solution containing either (1)one of the six anions studied in this experiment, or (2) none...
Determination of Ka and Identification of an Unknown Weak Acid Post-lab Question 1. Suppose that a student performing this experiment mistakenly calibrated the pH meter using pH 8 buffer instead of pH 7 buffer. As a result of this error, all of the student's pH readings were too low. a) Would this error have affected the calculated molar mass of the unknown acid? Briefly explain. b) Would this error have affected the experimentally determined pKa of the unknown acid? Briefly...
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Ka Cr Oy MI-A 3x1 C4 - NO STOR : The Empirical Formula of an Oxide analysis it was found to 2. A sample of ampound containing Co, and silver (Ag) weighed 1.372 g. On analysis it was 28 Oand 0974 g Ag. The molar mass of the compound is 303.8 g mol and the masses of c and Ag are 12.01 g mol-16.00 g mol), and 107.9 g mol, respectively. Dete the empirical and molecular formulas of the...
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