CHEMISTRY SS2 STOICHOMETRY OF REACTIONS,MASS-VOLUME RELATIONSHIP IN REACTIONS QUIZ

How much sodium hydroxide is required to make 250cm³ of a 0.1M solution ?

[Na = 23, O=16, H=1]

What is the concentration of a solution containing 2g of NaOH in 100cm³ of solution?

[Na=23, O=16, H=1]

What weight of NaCl is needed to make 2.0dm³ of a 1.5M solution?

[Na = 23, Cl = 35.5]

What mass of K₂CrO₄ is required to prepare 250cm³ of 0.020moldm^-3 solution ?

[K₂CrO₄ = 194.2gmol^-1]

What volume of 2M HCl will be required to react completely with 6.5g of zinc

Zn_(s) + 2HCl_(aq)→ZnCl_2(aq) + H_2(g)

[Zn = 65, H= 1, Cl=35.5]

If 100cm³of CO is burnt in 100cm³ of O₂

(all volume measured at the same temperature and pressure),

what volume of O₂ will remain at the end of the reaction ?

[2CO_(g) + O_2(g)→ 2CO_2(g)

Consider the reaction,

2CO_(g) + O_2(g)→ 2CO_(g)

Calculate the volume of excess oxygen gas when 150cm³ of CO is burnt in 80cm³ of oxygen

20cm³ of methane was burnt in 20cm³ of oxygen.

Calculate the volume of unreacted gas after cooling to the initial temperature and pressure

CH_4(g) +2O_2(g)→ CO_2(g) + 2H₂O_(g)

Calculate the mass of Mg which will react completely with 200cm³ of 0.01M hydrochloric acid

Mg_(s) + 2HCl_(aq)→ MgCl_2(aq) + H_2(g)

      [Mg = 24, H = 1, Cl= 35.5]

What volume of 1.5M tetraoxosulphate (VI) acid will be required to react completely with 2g of calcium

Ca_(s)+H₂SO_4(aq)→ CaSO_4(s) + H_2(g)

[Ca = 40, H= 1, S=32, O=16]