Chemistry
Grade-8
Easy

Question

When iron metal is taken in place of zinc for the laboratory preparation of Hydrogen, the volume of Hydrogen collected is lower. Identify the reason.
(i)  Metal becomes passive due to the formation of a protective coating.
(ii)  The formation of insoluble sulphate stops the further reaction.
(iii)  There are impurities in the metal.
(iv)  The reaction becomes reversible.

  1. Only (i) and (ii)
  2. Only (i) and (iii)
  3. Only (iii)
  4. Only (iv)

hintHint:

The more the reaction moves forward the more the products are formed.

The correct answer is: Only (iv)


    The correct option is d)(iv)  The reaction becomes reversible.
    Iron (Fe) is not used for hydrogen production in the laboratory because iron needs to be heated and produces impurities such as H2o and SO2 gases. It also reverses the reaction which results in low quantity of hydrogen.

    Related Questions to study

    Grade-8
    Chemistry

    The correct conditions for the production of Hydrogen gas from the water gas are:

    The correct conditions for the production of Hydrogen gas from the water gas are:

    ChemistryGrade-8
    Grade-8
    Chemistry

    In the laboratory preparation of Hydrogen, it is collected by downward displacement of water. It is also collected after all the air in the apparatus is allowed to escape because:

    In the laboratory preparation of Hydrogen, it is collected by downward displacement of water. It is also collected after all the air in the apparatus is allowed to escape because:

    ChemistryGrade-8
    Grade-8
    Chemistry

    The most stable isotopes among all naturally occurring isotopes are:

    The most stable isotopes among all naturally occurring isotopes are:

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    A promoter used in the Bosch process:

    A promoter used in the Bosch process:

    ChemistryGrade-8
    Grade-8
    Chemistry

    During the bosh process to prepare Hydrogen, some carbon dioxide is also obtained as a by-product. Write a chemical equation to remove this carbon dioxide by using caustic potash.

    During the bosh process to prepare Hydrogen, some carbon dioxide is also obtained as a by-product. Write a chemical equation to remove this carbon dioxide by using caustic potash.

    ChemistryGrade-8
    Grade-8
    Chemistry

    During the preparation of Hydrogen by the laboratory method. Arrange these steps in proper order.
    1. Fix a two-holed airtight stopper in the mouth of the flask.
    2. Take a few pieces of granulated zinc pieces in rare taken in a flat-bottomed flask
    3. Pass a thistle funnel through one hole and pass one end of the delivery tube through the other hole.
    4. Now pour some dilute hydrochloric acid through the thistle funnel.
    Place another end of the delivery tube inside the beehive shelf kept in a water trough.

    During the preparation of Hydrogen by the laboratory method. Arrange these steps in proper order.
    1. Fix a two-holed airtight stopper in the mouth of the flask.
    2. Take a few pieces of granulated zinc pieces in rare taken in a flat-bottomed flask
    3. Pass a thistle funnel through one hole and pass one end of the delivery tube through the other hole.
    4. Now pour some dilute hydrochloric acid through the thistle funnel.
    Place another end of the delivery tube inside the beehive shelf kept in a water trough.

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    State whether the following are true or false.
    (i). Hydrogen is the most abundant element in the universe but is only available in very few quantities.
    (ii). Commercially the hydrogen gas can be prepared by electrolysis of water.
    (iii). The Bosch process can also prepare Hydrogen from natural gas, which contains ethane as the main ingredient.

    State whether the following are true or false.
    (i). Hydrogen is the most abundant element in the universe but is only available in very few quantities.
    (ii). Commercially the hydrogen gas can be prepared by electrolysis of water.
    (iii). The Bosch process can also prepare Hydrogen from natural gas, which contains ethane as the main ingredient.

    ChemistryGrade-8
    Grade-8
    Chemistry

    Dry Hydrogen is collected by downward displacement as it is:

    Dry Hydrogen is collected by downward displacement as it is:

    ChemistryGrade-8
    Grade-8
    Chemistry

    Which scientist first prepared the Hydrogen gas?

    Which scientist first prepared the Hydrogen gas?

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    Identify the  least stable isotopes from all synthesized isotopes shown the below:

    Identify the  least stable isotopes from all synthesized isotopes shown the below:

    ChemistryGrade-8
    Grade-8
    Chemistry

    As Hydrogen gas is explosive, the precaution that must take in the laboratory is that:

    As Hydrogen gas is explosive, the precaution that must take in the laboratory is that:

    ChemistryGrade-8
    Grade-8
    Chemistry

    Why only granulated zinc is preferred for the laboratory reparation of Hydrogen?

    Why only granulated zinc is preferred for the laboratory reparation of Hydrogen?

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    During the Bosch process, steam is passed over hot coke at a very high temperature in the furnace. This furnace is known as:

    During the Bosch process, steam is passed over hot coke at a very high temperature in the furnace. This furnace is known as:

    ChemistryGrade-8
    Grade-8
    Chemistry

    In the laboratory preparation of Hydrogen, dilute nitric acid cannot be used because:

    In the laboratory preparation of Hydrogen, dilute nitric acid cannot be used because:

    ChemistryGrade-8
    Grade-8
    Chemistry

    During the discovery of Hydrogen, which of the following scientist give the name Hydrogen?

    During the discovery of Hydrogen, which of the following scientist give the name Hydrogen?

    ChemistryGrade-8
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.