7.1 lesson 10 hydrolysis

What substance is dissolved in water to create the solution for the hydrolysis experiment?

• Sodium chloride

• Magnesium sulfate

• Potassium iodide

• Calcium chloride

After filling a test tube with the magnesium sulfate solution and capping it, what is the next step to prepare it for gas collection?

• Place it upright in the beaker.

• Heat the test tube gently.

• Submerge it upside down in the liquid.

• Shake it vigorously to mix.

How is the hydrolysis reaction initiated in the experiment?

• By adding more Epsom salt to the solution.

• By heating the beaker with a Bunsen burner.

• By connecting a battery to the metal hooks.

• By stirring the solution continuously.

After an hour, what observation is made regarding the gas collected in the test tubes?

• Both test tubes are completely filled with gas.

• One test tube is about one-third filled, and the other is about two-thirds filled.

• Both test tubes contain equal amounts of gas.

• No gas has been collected in either test tube.

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What is the correct procedure for capping a test tube filled with gas after collection?

• Remove the test tube from the water, then place a cap on it.

• While the test tube is still inverted in the water, slide a cap over its opening before removing it.

• Pour out the remaining water, then quickly cap the test tube.

• Use a test tube holder to clamp the cap onto the test tube while it's still submerged.

During the electrolysis of water, how do the volumes of hydrogen and oxygen gas produced compare?

• Equal volumes of hydrogen and oxygen are produced.

• More oxygen gas is produced than hydrogen gas.

• More hydrogen gas is produced than oxygen gas.

• The relative volumes depend on the battery strength.

What is the characteristic result when testing for hydrogen gas with a lit match?

• The match glows brighter.

• The match is extinguished.

• A loud "pop" sound is heard.

• The gas turns blue litmus paper red.

How is the presence of oxygen gas typically confirmed using a glowing splint?

• The glowing splint is extinguished.

• The glowing splint re-ignites.

• The glowing splint produces a "pop" sound.

• The glowing splint turns black.