General Chemistry Answers

Determine whether the following reactions will occur by determining the voltage produced. (3 marks each)

a. Ag(s) + HCl(aq) 

b. Mg(s) + FeSO4(aq) 

3. The most common method of producing bromine involves oxidizing bromine ions (Br- ) to bromine liquid (Br2) using chlorine gas (Cl2). What is the E for this reaction? 2 marks

1. By what mass (in grams) will a chromium cathode increase when it is coupled to a magnesium half-cell in which the magnesium anode loses 1.53 grams? (assuming chromium ions in solution are Cr3+).

To prevent dehydration, intravenous (IV) solution is given to hospital patients. Commonly used are solutions containing sodium chloride and glucose. A 150.0-mL IV solution contains 6.60 grams of glucose (CHO). What is the molarity of this solution? The molar mass of glucose is 180.16 g/mol.

Write the balanced NET ionic equation for the reaction when Pb(NO₃)₂ and KI are mixed in aqueous solution. If no reaction occurs, simply write only NR.

if the volume of confined gas is doubled while the temperature remains constant, what change would be observed in the pressure?

If 8.28 L of hydrogen gas at SATP is produced, how many moles of aluminium were reacted?

The volume of a sample of a gas is 8.39 L at 33oC. What would be the volume if the temperature is changed to 265 K, while the pressure is constant?

How much heat energy is required to change the temperature of 56.75 g of

water from 23.0 C to 56.7 C? (specific heat capacity of water is 4.18 kJ/(kg

OC))

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a 25.00 ml aliquot of 0.16m nacl was titrated with 27.52 ml of 0.18 m agno3.determine whether the precipitate will form at the end point ksp agcl=1.6*10^-10