FUTO Chemistry 2013/2014 Day 2 Past Questions

Practice each question, then open it to see the full details.

A gas occupies 30.0dm³ at STP. What volume would it occupy at 91°C and 380mmHg?

A.20.0dm³
B.40.0dm³
C.60.0dm³
D.80.0dm³
E.100.0dm³

28.8cm³ of nitrogen at 15°c is cooled to 0°c at constant pressure, the new volume of nitrogen is

A.17.4cm³
B.14.7cm³
C.27.3cm³
D.31.7cm³
E.34.7cm³

If the molar mass of x is 36g, the number of moles of x dissolved at 343K

A.0.2 moles
B.0.7 moles
C.1.5 moles
D.2.0 moles
E.3.0 moles

If 24.83cm³ of 0.15M NaOH is titrated to its end point with 39.45cm³ of HCl, what is the molarity of the HCI?

A.0.094M
B.0.150M
C.0.940M
D.1.500M
E.0.091M

What volume of a 0.1M H₃PO₄ will be required to neutralize 45.0cm³ of a 0.2M NaOH?

A.40.0cm³
B.10.0cm³
C.20.0cm³
D.27.0cm³
E.30.0cm³

What is the concentration of H⁺ ions in moles per dm³ of a solution of pH 4.398?

A.4.0 x 10^-5
B.0.4 x 10^-5
C.4.0 x 10^-3
D.0.4 x 10^-3
E.0.4 x 10^-2

What volume of 11.0M hydrochloric acid must be diluted to obtain 1dm³ of 0.05M acid?

A.0.005dm³
B.0.10dm³
C.0.55dm³
D.11.0dm³
E.0.15dm³

A given mass of gas occupies 2dm³ at 300k. At what temperature will its volume be doubled keeping the pressure constant?

A.400k
B.480k
C.550k
D.600k
E.500k

How many moles of oxygen molecules would be produced from the decomposition of 2.5 moles of e i, potassium trioxochlorate (V)?

A.2.50
B.3.50
C.3.75
D.7.50
E.2.75

The carbon atoms of ethane are

A.Sp² hybridized
B.Sp³ hybridized
C.Sp²d hybridized
D.Sp hybridized
E.Sd hybridized