When a mixture of gas X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300OC), then an organic compound Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in limited supply of air; Y is a gas which can be made by the action of dilute acid on an active metal, and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.(a) What are X, Y, and Z.(b) Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions in which the reaction occurs.
a) X is carbon monoxide gas (CO)
Y is hydrogen gas( H2 )
Z is methanol (or Methyl alcohol) (CH3OH)
[Note: CH4O=CH3OH= methanol.]
b) Formation of Z;
$CO( g) +2H2( g)\xrightarrow[ZnO,\ CrO_{3}]{300\ atm,\ 300\ C} \ CH3OH( l)$
Methanol (Methyl alcohol)
The conditions for this reaction to take place are:
- the pressure of 300 atmospheres (written as 300 atm),
- the temperature of 300oC,
- a catalyst which is a mixture of zinc oxide and chromium oxide (ZnO+CrO3).
Related Articles
- When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through water, then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.(a) What are X, Y and Z?(b) Write equations for the reactions which takes place:(i) when limestone reacts with dilute HCl(ii) when gas X reacts with limewater to form white precipitate Y.(iii) when excess gas X dissolves white precipitate Y to form a soluble compound Z.
- When metal X is treated with dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.(a) Name any two metals which can behave like metal X.(b) Name any two acids which can behave like acid Y.(c) Name the gas Z.(d) Is gas Z lighter than or heavier than air?(e) Is the reaction between metal X and dilute acid Y exothermic or endothermic?(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate the physical states of all the reactants and products
- A four carbons atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with 'pop' sound. Another four carbon atoms containing carbon compound reacts with sodium hydrogen carbonate to evolve a gas which turns lime water milky. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed.(a) What is compound X ? Also write its formula. (b) What is compound Y ? Also write its formula. (c) What is compound Z ? Also write its formula. (d) What type of smell is given by compound Z? (e) What is the general name of compounds like Z? (f) What is the general name of the reaction which takes place between X and Y to form Z?
- A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertilizer.(a) What are X, Y, and Z? (b) To which group of periodic table does X belong? (c) Name the period of periodic table in which X is placed. (d) Which element is placed just before X in the period? (e) Which element is placed just after X in the period?
- A substance X which is used as an antacid reacts with dilute hydrochloric acid to produce a gas Y which is used in one type of fire-extinguisher. Name the substance X and gas Y. Write a balanced equation for the chemical reaction which takes place.
- The electronic configurations of three elements X, Y, and Z are X - 2,8; Y - 2, 8, 7 and Z - 2, 8, 2. Which of the following is correct?(a) X is a metal(b) Y is a metal(c) Z is a non-metal(d) Y is a non-metal and Z is a metal
- When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y and Z and also write the reaction involved.
- Identify ‘x’, ‘y’ and ‘z’ in the following reaction : $2KClO_3 (x) \xrightarrow{(y)} 2 KCl (x) + O_2(z)$(a) x = gas ; y = reaction condition, z = gas (b) x = solid ; y = liquid; z = gas (c) x = number of moles of KClO3 ; y = reaction condition; z = no. of molecules of oxygen. (d) x = physical state of KClO3 and KCl; y = reaction condition; z = physical state of O2.
- A silvery-white metal X taken in the form of ribbon, when ignited, burns in air with a dazzling white flame to form a white powder Y. When water is added to powder Y, it dissolves partially to form another substance Z.(a)What could metal X be? (b) What is powder Y? (c) With which substance metal X combines to form powder Y? (d) What is substance Z? Name one domestic use of substance Z? (e)Write a balanced chemical equation of the reaction which takes place when metal X burns in air to form powder Y.
- Hydrochloric acid reacts with a metal X to form a gas Y which burns with a ‘pop’ sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.(a) Name X and Y(b) Write the chemical equation of the reaction of metal X with (i) Hydrochloric acid, and (ii) Sodium hydroxide solution.
- A liquid compound X of molecular mass 18 u can be obtained from a number of natural sources. All the animals and plants need liquid X for their survival. When an electric current is passed through 200 grams of pure liquid X under suitable conditions, then 178 grams of gas Y and 22 grams of gas Z are produced. Gas Y is produced at the positive electrode whereas gas Z is obtained at the negative electrode. moreover, gas Y supports combustion whereas gas Z burns itself causing explosions.(a) Name (i) liquid X (ii) gas Y, and (iii) gas Z.(b) What is the ratio of the mass of element Z to the mass of element Y in the liquid X?(c) Which law of chemical combination is illustrated by this example ?(d) Name two sources of liquid X.(e) State an important use of Y in our life.
- A metal carbonate X on reacting with acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at the anode during electrolysis of brine is passed on dry Y, and it gives a compound Z, used for disinfecting drinking water. Identity X, Y, G and Z.
- When a black metal compound XO is heated with a colourless gas Y2, then metal X and another compound Y2O are formed. Metal X is red-brown in colour which does not react with dilute acids at all. Gas Y2 can be prepared by the action of a dilute acid on any active metal. The compound Y2O is a liquid at room temperature which can turn anhydrous copper sulphate blue.(a) What do you think is metal X?(b) What could be gas Y2?(c) What is compound XO?(d) What is compound Y2O?(e) Write the chemical equation of the reaction which takes place on heating XO with Y2.(f) What type of chemical equation is illustrated in the above equation?
- The metal X reacts with dilute hydrochloric acid to form a gas Y. The metal X also reacts with sodium hydroxide solution (on heating) to form the same gas Y. When a lighted matchstick is applied, this gas burns by producing a ‘pop’ sound.(a) Name two metals which could behave like X(b) Name the gas Y
- When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies