Chemistry questions
29404 published questions with worked solutions.
- The enthalpies of combustion of carbon and carbon monoxide are −393.5 and −283 kJ mol^ -1 respectively. The enthalpy of formation...
- What is the equilibrium expression for the reaction P_ 4(s) + 5O_ 2(g) P_4O_ 10(s) ?
- For the reaction, CO(g) + Cl_2(g) COCl_2(g) the K_p K_c is equal to
- The equilibrium constant for the reaction N_2(g) + O_2(g) 2NO(g) at temperature T is 4 10^ -4 . The value of Kc for the reaction...
- Among Al_2O_3, SiO_2, P_2O_3 and SO_2 the correct order of acid strength is
- The molar solubility product is K_ sp . ' s ' is given in terms of K_ sp by the relation
- Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by CN^- ion towards metal species is
- Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in
- The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of...
- For which of the following parameters the structural isomers C_2H_5OH and CH_3OCH_3 would be expected to have the same values?...
- The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of...
- Which of the following will have meso-isomer also?
- Which of the following compound is not chiral?
- The smog is essentially caused by the presence ofNot in JEE Main or NEET syllabus
- Which of the following liquid pairs shows a positive deviation from Raoult's law?
- In hydrogen - oxygen fuel cell, combustion of hydrogen occurs to
- Consider the following E^ values E^ _ Fe^ 3+ /Fe^ 2+ = 0.77 V E^ _ Sn^ 2+ /Sn = -0.14 V Under standard conditions the potential...
- The standard e.m.f of a cell, involving one electron change is found to be 0.591 V at 25^ . The equilibrium constant of the...
- The limiting molar conductivities ^ for NaCl, KBr and KCl are 126,152 and 150 S cm^2 mol^ -1 respectively. The ^ for NaBr is
- In a cell that utilises the reaction Zn(s) + 2H^+(aq) Zn^ 2+ (aq) + H_2(g) addition of H_2SO_4 to cathode compartment, will