a) if gas bubbles are produced by a chemical reaction, how could you prove that the...

a) if gas bubbles are produced by a chemical reaction, how could you prove that the bubbles were composed of carbon dioxide?

b) if a solution is thought to contain chloride ions, how could this be detemined?

Expert Solution

a) Lime water can be used to detect the presence of carbpn dioxide evolved in a chemical process.

For example

2HCl+CaCO3 ------------------------->CaCl2 + CO2 + H2O

As soon as the lime water comes in contact with carbon dioxide,it turns milky.

In this reaction setup, lime water is poured in one of the test tubes & sealed with a stopper. Small amount of HCl is carefully poured into the remaining test tube. A small amount of Na2CO3 is added to the acid, and the tube is sealed with a rubber stopper. The two tubes are connected. As a result of the acid-carbonate reaction, CO2 is produced and the lime water turns milky.

b Chloride ions in a solution can be determined by treating the given solution with silver nitrate .

The chlorid ions will precipitate precipitate as white colored mass of silver chloride

Ag+ + Cl- ------------> AgCl(s)

queen_honey_blossom answered 2 years ago

Ammonia is produced by the catalytic reaction of nitrogen and hydrogen. A) Write the chemical reaction...

Ammonia is produced by the catalytic reaction of nitrogen and hydrogen. A) Write the chemical reaction and balance it. Determine the stoichiometric coefficients. B) If 15 mol/sec of H2 is fed to the reactor, determine the amount of N2 required if a 20.% excess (of N2) is desired. C) If 5.0 mol/sec of H2 exits the catalytic reactor, determine: i) ξ. ii) the number of moles of all three components exiting the reactor. iii) the conversion of H2...

Gas experiement: Mg + HCl reaction The volume of hydrgeon gas produced was not at standard...

Gas experiement: Mg + HCl reaction The volume of hydrgeon gas produced was not at standard temperautre and pressure. Convert the volume at the pressure and temperature of the experiement to a volume at standard temperature and pressure : STP (T=273.15 and P=1.00 atm). Mg + 2HCl -> MgCl2 + H2 Mass of Mg: .012 Max pressure: 1.0946 Initial pressure: 1.0103 Pressure change: .0843 Temperature: 294.3 Used 5 ml of 1.0 M HCl in experiment

What are “hallmarks” of chemical reactions, that is,how can you observe that a chemical reaction has...

What are “hallmarks” of chemical reactions, that is,how can you observe that a chemical reaction has taken place?

Hydrogen gas can be produced by the reaction of iron metal with steam, as shown in...

Hydrogen gas can be produced by the reaction of iron metal with steam, as shown in the equation below: 3 Fe (s) + 4 H2O (g) à Fe3O4 (s) + 4 H2 (g) If 40.00 g of iron are combined with 40.00 g of steam and reacted, calculate (i) how many grams of hydrogen gas will be formed and (ii) how many grams of the excess reagent will remain after the end of the reaction.

2agno3+na2cro4 ag2cro4+2nano3For the following chemical reaction, how many moles of silver chromate (Ag2CrO4) will be produced...

2agno3+na2cro4 ag2cro4+2nano3For the following chemical reaction, how many moles of silver chromate (Ag2CrO4) will be produced from 8 mol of silver nitrate (AgNO3)? For the following chemical reaction, what mass of silver chromate (in grams) will be produced from 3.91 mol of silver nitrate? mg+cu(no3)2 mg(no3)2+cu Assuming an efficiency of 28.30%, calculate the actual yield of magnesium nitrate formed from 114.1 g of magnesium and excess copper(II) nitrate.

42)In a chemical reaction, the amount of grams, Q, of a substance produced in t hours...

42)In a chemical reaction, the amount of grams, Q, of a substance produced in t hours is Q(t) = 40t – 5t2. (a)How many grams, Q, are present at t = 2 ? (b) Find the rate that the substance is being produced at t = 3. (c) At what time, t, is the reaction no longer changing?

1. A chemist observed a gas being evolved in a chemical reaction and collected some of...

1. A chemist observed a gas being evolved in a chemical reaction and collected some of it for analysis. It was found to contain 80% carbon and 20% hydrogen. It was also observed that 500. mL of the gas at STP weighed 0.6695 g. What is the empirical formula for the compound? What is its molecular formula? 2. The ratio of an unknown gas effuses at a rate that is 0.325 times that of argon gas. Calculate the molar mass...

Consider the equilibrium system described by the chemical reaction below. At equilibrium, a sample of gas...

Consider the equilibrium system described by the chemical reaction below. At equilibrium, a sample of gas from the system is collected into a 4.00 L flask at 600 K. The flask is found to contain 3.86 g of PCl₅, 12.7 g of PCl₃, and 13.3 g of Cl₂. What are the values of Kc and Kp for this reaction? PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)

A really important chemical (D) is produced from available feedstock (A) in liquid phase reaction. At...

A really important chemical (D) is produced from available feedstock (A) in liquid phase reaction. At reaction conditions, A also degrades into undesirable impurity (U). The reactions are given as: A D rD = k1C 2 A A U rU = k2CA The reaction is carried out in two CSTRs with residence times of 2.5 min and 10 min respectively connected in series. The feed to the first reactor contains A and U with concentrations of CA0= 1.0, and CU0...

A chemical reaction that shows aromaticity. How does aromaticity influence this reaction?

A chemical reaction that shows aromaticity. How does aromaticity influence this reaction? —>Examples: Does it affect physical properties of chemical behavior, will it make it easier or harder for the reactants to undergo the reaction, will it help determine the products that are formed in the reaction?

Question