If you experimentally increase the concentration of k + inside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential?

The resting potential of the neuron would be reduced from - 70mV. This is because increasing K + ions inside the cell reduced the electro negativity of the inside of the cell in comparison to the outside. Therefore, the reaching the potential to induce an impulse would be easier but then the impulse would be weaker than normal.